1970-78 Camarowithout Factory Air
561173
901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 1 OF 29
an ISO 9001:2008 Registered Company
18865 Goll St. San Antonio, TX 78266 ph: 210-654-7171 fax: 210-654-3113
2901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 2 OF 29
Table of Contents 3. Packing List/Parts Disclaimer 4. Information Page 5. Wiring Notice 6. Engine Compartment, Condenser Assembly & Installation, Compressor & Brackets, Pulleys Figure 1 7. Passenger Compartment Figures 2 & 3 8. Passenger Side Kick Panel Modification Figures 4 & 4a 9. Defrost Duct/Fresh Air Cover Installation & Hose Adapter Installation Figures 5, 5a & 610. Fresh Air Cap Installation & Kick Panel Fresh Air Cap Installation Figures 7, 8, 8a & 8b11. Firewall Cover & Evaporator Bracket and A/C & Heater Hose Installation Figures 9 & 1012. Evaporator Bracket and Heater Fitting Installation (Cont.) Figure 1113. Evaporator Installation Figures 12 & 12a14. Drain Hose Installation & Center Louver Mounting Holes Figures 13, 14 & 14a15. Center Louver Installation Figures 15 & 15a16. Lubricating O-rings, Standard Hose Kit & Modified A/C Hose Kit Figure 16 17. 1970-73 Camaro Heater Hose & Heater Control Valve Installation Figure 1718. 1974-78 Camaro Heater Hose & Heater Control Valve Installation Figure 1819. Final Steps and Glove Box Installation Figures 19, 20 & 20a20. Control Panel & Duct Hose Routing Figures 21 & 2221. Wiring Diagram22. Gen IV Wiring Connection Instruction23. Operation of Controls24. Troubleshooting Information25. Troubleshooting Information (Cont.)26. Kick Panel Modification Template27. Center Louver Template28. Glove Box Light Template29. Evaporator Kit Packing List
3901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 3 OF 29
1
Accessory Kit781178
2
4-Vent Evaporator Sub Case w/ 204 ECU
744004-VUE
** Before beginning installation, open all packages and check contents of shipment. Please report any shortages directly to Vintage Air within 15 days. After 15 days, Vintage Air will not be responsible for missing or damaged items.
1.2.
11
744004-VUE781178
4-Vent Evap orator Sub Case w/ 204 ECUAccessory Kit 1970-78 Camaro wo A/C
No. Qty. Part No. Description
Packing ListEvaporator Kit (561173)
NOTE: Images may not depict actual parts and quantities. Refer to packing list for actual parts and quantities.
4901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 4 OF 29
Important Notice—Please ReadFor Maximum System Performance, Vintage Air Recommends the Following:
New Vintage Air-supplied Sanden Compressor: No additional oil needed (Compressor is shipped with proper oil charge).All Other Compressors: Consult manufacturer (Some compressors are shipped dry and will need oil added).
NOTE: Vintage Air systems are designed to operate with R134a refrigerant only. Use of any other refrigerant could damage your A/C system and/or vehicle, and possibly cause a fire, in addition to potentially voiding the warranties of the A/C system and its components.
Refrigerant Capacities:Vintage Air System: 1.8 lbs. (1 lb., 12 oz.) of R134a, charged by weight with a quality charging station or scale. NOTE: Use of the proper type and amount of refrigerant is critical to system operation and performance.Other Systems: Consult manufacturer’s guidelines.
Lubricant Capacities:
Safety Switches
Service Info:Protect Your Investment: Prior to assembly, it is critical that the compressor, evaporator, A/C hoses and fittings, hardlines, condenser and receiver/drier remained capped. Removing caps prior to assembly will allow moisture, insects and debris into the components, possibly leading to reduced performance and/or premature failure of your A/C system. This is especially important with the receiver/drier. Additionally, when caps are removed for assembly, BE CAREFUL! Some components are shipped under pressure with dry nitrogen.Evacuate the System for 35-45 Minutes: Ensure that system components (Drier, compressor, evaporator and condenser) are at a temperature of at least 85° F. On a cool day, the components can be heated with a heat gun or by running the engine with the heater on before evacuating. Leak check and charge to specifications.
Your Vintage Air system is equipped with a binary pressure safety switch. A binary switch disengages the compressor clutch in cases of extreme low pressure conditions (Refrigerant Loss) or excessively high head pressure (406 PSI) to prevent compressor damage or hose rupture. A trinary switch combines Hi/Lo pressure protection with an electric fan operation signal at 254 PSI, and should be substituted for use with electric fans. Compressor safety switches are extremely important since an A/C system relies on refrigerant to circulate lubricant.
Bolts Passing Through Cowl and/or Firewall:To ensure a watertight seal between the passenger compartment and the vehicle exterior, for all bolts passing through the cowl and/or firewall, Vintage Air recommends coating the threads with silicone prior to installation.
Heater Hose (Not Included With This Kit):Heater hose may be purchased from Vintage Air (Part# 31800-VUD) or your local parts retailer. Routing and required length will vary based on installer preference.
5901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 5 OF 29
Important Wiring Notice—Please Read
Some Vehicles May Have Had Some or All of Their Radio Interference Capacitors Removed. There Should Be a Capacitor Found At Each of the Following Locations:
1. On the positive terminal of the ignition coil.2. If there is a generator, on the armature terminal of the generator.3. If there is a generator, on the battery terminal of the voltage regulator.
Most alternators have a capacitor installed internally to eliminate what is called “whining” as the engine is revved. If whining is heard in the radio, or just to be extra cautious, a radio interference capacitor can be added to the battery terminal of the alternator.
It is also important that the battery lead is in good shape and that the ground leads are not compromised. There should be a heavy ground from the battery to the engine block, and additional grounds to the body and chassis.
If these precautions are not observed, it is possible for voltage spikes to be present on the battery leads. These spikes come from ignition systems, charging systems, and from switching some of the vehicle’s other systems on and off. Modern computer-operated equipment can be sensitive to voltage spikes on the power leads, which can cause unexpected resets, strange behavior, and/or permanent damage.
Vintage Air strives to harden our products against these types of electrical noise, but there is a point where a vehicle’s electrical system can be degraded so much that nothing can help.
Radio interference capacitors should be available at most auto and truck parts suppliers. They typically are cylindrical in shape, a little over an inch long, a little over a half inch in diameter, and they have a single lead coming from one end of the cylinder with a terminal on the end of the wire, as well as a mounting clip which is screwed into a good ground on the vehicle. The specific value of the capacitance is not too significant in comparison to ignition capacitors that are matched with the coil to reduce pitting of the points.
Care must be taken, when installing the compressor lead, not to short it to ground. The compressor lead must not be connected to a condenser fan or to any other auxiliary device. Shorting to ground or connecting to a condenser fan or any other auxiliary device may damage wiring, the compressor relay, and/or cause a malfunction.
When installing ground leads on Gen IV systems, the blower control ground and ECU ground must be connected directly to the negative battery post.
For proper system operation, the heater control valve must be connected to the ECU.
•
•
•
6901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 6 OF 29
Condenser Assembly & Installation
Compressor & Brackets
Pulleys
OEM HeaterWiring/Vacuum
HarnessMolded Grommet
Hood Latchand Support
Assembly
Battery &Battery Tray
InnerFender Panel
OuterFender Heater Hose
Clamp
OEMBlower Motor
Assembly
Radiator
Engine CompartmentBefore starting the installation, check the function of the vehicle (horn, lights, etc.) for proper operation. Study the instructions, illustrations & diagrams.
Remove the Following:
1. Battery and battery tray (retain) (See Figure 1, below).
2. Drain radiator.
3. Hood latch assembly (retain) including hood latch support.
4. Heater blower motor assembly (discard). To remove the heater blower motor assembly (under hood) and the air distribution system (under dash), remove inner fender (See Figure 3, below).
5. OEM heater hoses (discard) (See Figure 1, below).
6. Remove OEM heater wiring/vacuum harness molded grommet (See Figure 1, below).
1. Refer to separate instructions included with the condenser kit to install the condenser.
2. Binary switch installation (refer to condenser instructions).
1. Refer to separate instructions included with the bracket kit to install the compressor bracket.
1. In most instances, the belt lengths will remain the same.
Figure 1
7901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 7 OF 29
NOTE: Removal of dashboard is not required to install the evaporator. Vintage Air recommends that you utilize the factory service manual when you disassemble and reassemble the dashboard.
Remove the Following:
1. Glove box door (See Figure 3, below).
2. Glove box (discard, retain screws) (See Figure 2, below).
3. Heater assembly and all related ducting (discard, retain screws) (See Figure 3, below).
4. Driver/passenger side louver outlets (retain). Instrument panel must be removed to get to left outlet and control panel (See Figure 3, below).
5. Control panel assembly (discard) (See Figure 3, below). Refer to control panel conversion kit instructions for installation of controls.
6. Remove passenger side kick panel (retain). Disconnect passenger side fresh air cable from panel (See Figure 3, below). Disconnect driver/passenger cable astro-ventilation ducting (discard).
7. Remove OEM defrost duct assembly (discard).
Driver SideAstro Ventilation
Duct
Figure 3
Driver SideLouver
Driver SideKick Panel
ControlPanel
InstrumentPanel
Passenger SideLouver
Passenger SideAstro
VentilationDuctAstro
Fresh
Passenger SideKick Panel
Glove BoxDoor
HeaterAssembly
Passenger Compartment
Glove Box
Figure 2
8901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 8 OF 29
Passenger SideKick Panel Modification
Figure 4a
1. Remove kick panel by removing the (5) OEM screws. Disconnect the fresh air door from the lever housing (See Figure 4, below).
2. Cut kick panel grille using template provided on Page 24 (See Figure 4a, below).
3. Enlarge OEM lever housing holes to 1/2” (See Figure 4a, below).
4. Install (2) 1/2” plastic plugs in OEM lever housing holes (See Figure 4a, below).
Grille
Template
Kick Panel
(5) OEMScrews
OEM Lever Housing Kick
Panel
Enlarge OEMLever Housing Holes To 1/2”
1/2” Plastic Plug31102-GUR
Figure 4
9901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 9 OF 29
Driver SideDefrostDuct
627171-PCA
10-24 Nutw/ Star Washer
10-24 x 3/8”Pan HeadScrew
OEMDefrost Duct
Mounting Flange
Driver SideFresh Air Cover
644175
Passenger SideDefrostDuct
627171-PCA
Passenger SideFresh Air Cover
644176
Silicone
Mating Surfaceof Fresh Air Cover
OEMScrews
OEMScrews
1. Install the defrost ducts onto the OEM defrost duct mounting flange under the dash as shown in Figure 5, below. Secure using a 10-24 x 3/8” pan head screw and a 10-24 nut with star washer.2. Apply a 1/4” bead of silicone around the mating surface of the driver and passenger side fresh air covers as shown in Figure 5a, below.3. Install the driver and passenger side fresh air covers, and secure using OEM screws (See Figure 5, below).
Defrost Duct/Fresh Air Cover Installation
Figure 5
Figure 6
Figure 5a
HoseAdapter
(2) S-clips
Hose Adapter Installation1. Install (2) S-clips on hose adapter as shown in Figure 6, below.2. Install driver & passenger side hose adapters on OEM louvers (See Figure 6, below).
10901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 10 OF 29
1/4-20 X 1 ½”Bolt w/ Washer
Fresh Air Cap andHeater Cover Bracket Installation
Silicone
Fresh AirCap(4) Grommets
33137-VUI
Mating Surfaceof Fresh Air Cap
EngineCompartment
Firewall
1. Install (4) grommets in fresh air cap (See Figure 7, below).2. Apply a 1/4” bead of silicone around the mating surface of the fresh air cap as shown in Figure 7, below.3. Attach fresh air cap to firewall using a 1/4-20 x 1 ½" bolt and washer, see Figure 7, below. NOTE: Fresh air cap installs on engine side of firewall.4. Install 1 ¼” plug in firewall (See Figure 7, below).
Kick Panel Fresh Air Cap Installation1. Install (4) grommets in kick panel fresh air cap (See Figure 8a, below).2. Route A/C and heater hose through fresh air cap and kick panel fresh air cap as shown in Figures 8 and 8b, below.3. Apply a 1/4” bead of silicone around the mating surface of kick panel fresh air cap as shown in Figure 8a, below.4. Secure kick panel fresh air cap using OEM screws as shown in Figure 8b, below.
(5) OEMScrews
Silicone
Mating Surfaceof Kick PanelFresh Air Cap
#10 A/CHose
#6 A/CHose
(2) HeaterHoses
#10 A/C Hose
#6 A/C Hose(2) Heater
Hoses
(4)Grommets33137-VUI
Figure 7
Figure 8b
Figure 8
Figure 8a
1 ¼” Plug33132-VUI
11901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 11 OF 29
EngineCompartment
Side of Firewall
(4) 1/4-20 X 1”Hex Bolts
w/ Washers
NOTE: Firewall cover mounting holes must be enlarged. Enlarge (5) existing holes in firewall to 5/16”.
View Shown From Inside Car Through Dash
Figure 9
Mating Surfaceof Firewall
Cover
Silicone
1/4” Nutw/ Star Washer
1/4” X 3/4”Flat Washer
Evaporator Bracket andA/C & Heater Hose Installation
1. On a work bench, install evaporator rear bracket and A/C & heater hose with properly lubricated O-rings (See Figure 11, Page 12, and Figures 15, Page 15).2. Install front mounting bracket on evaporator using (2) 1/4-20 x 1/2” hex bolts and tighten as shown in Figure 10, below.
Firewall Cover Installation 1. Enlarge (5) OEM firewall holes to 5/16” (See Figure 9, below).2. Apply a 1/4” bead of silicone around the mating surface of the firewall cover as shown in Figure 9, below.3. From inside the car, install firewall cover on firewall (See Figure 9, below). From the engine compartment, secure firewall cover to firewall using (4) 1/4-20 x 1”, hex bolts, (5) flat washers and 1/4” nuts w/ star washers (See Figure 9, below).
(2) 1/4-20 X 1/2”Hex Bolts
Figure 10
Firewall Cover 648233
12901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 12 OF 29
Rear EvaporatorBracket ASM
644019
Evaporator Bracket andHeater Fittings Installation (Cont.)
Figure 11
(2) HeaterFittings121004
1/4-20 X 1/2” Bolts(Located on Sub Case)
wo A/C
w/ A/C
13901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 13 OF 29
Kick PanelFresh Air
Cap
(2) #14 X 3/4”Sheet Metal
Screws
1/4-20 X 1” Bolt w/ Washer
Evaporator Installation
1. Lift evaporator unit up under the dashboard (See Figure 12, below). Secure loosely to the firewall from the engine compartment side using a 1/4-20 x 1” bolt and washer (See Figure 12, below).2. Using (2) #14 x 3/4” sheet metal screws, secure the front evaporator mounting bracket to the inner cowl (See Figure 12, below).3. Verify that evaporator unit is level and square to the dash, and then tighten all mounting bolts. NOTE: Tighten the bolt on firewall first. Then tighten the front mounting bracket screws.
#10 A/C Hose
#6 A/C Hose
PressTape
HeaterHoses
HoseClamps
Figure 12a
Figure 12
14901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 14 OF 29
1. Locate evaporator drain on bottom of evaporator case.
2. In line with the drain, lightly make a mark on the firewall. Measure one inch down and drill a 5/8” hole through the firewall (See Figure 13, below).
3. Install drain hose to bottom of evaporator unit and route through firewall (See Figure 13, below).
1” DrainDrainHose
Drain Hose Installation
Center Louver Mounting Holes
1970-78 CAMARO w/o ACCENTER LOUVERTEMPLATE
1. Cut out template provided on Page 27. Slide the template under the dash as shown in Figure 14, below. Align the left and right sides of template with the crease in the dash as shown in Figures 14 & 14a, below. Align bottom edge of the template along the bottom edge of dash as shown in Figures 14 & 14a, below.
2. Once template is aligned correctly and taped into place, mark mounting holes on dash. Once holes are marked in the correct location, remove template and drill (2) 3/16” holes in dash for the center louver bezel (See Figure 14a, below).
Figure 14
1970-78 CAMARO w/o ACCENTER LOUVERTEMPLATE
OEMHoleFigure 14a
Figure 13
15901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 15 OF 29
CenterLouver
CenterLouver Bezel
Washer
1. Install the center louver bezel under the dash and secure using (2) 10-32 x 3/4” pan head screws w/ washers and 10-32 nuts w/star washers as shown in Figure 15, below.
2. Install the center louver into the bezel as shown in Figure 15, below.
3. Reinstall center console (if equipped) (See Figure 15a, below).
CenterLouver Bezel
Center Louver Installation
(2)10-32 X 3/4”Pan Head Screws
w/ 10-32 Nuts w/ Star Washers
FinalInstallation Final
Installationw/ Center Console
(If Equipped)
Figure 15a
Figure 15
16901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 16 OF 29
1. Refer to separate instructions included with modified hose kit.
1974-78 Camaro Standard Hose Kit
Modified A/C Hose Kit
1. Locate the #8 compressor A/C hose. Lubricate (2) #8 O-rings (See Figure 16, above) and connect the 90° female fitting w/ R134a service port to the #8 discharge port on the compressor. Route the 45° female fitting to the #8 condenser hardline coming through the core support (See Figure 18, Page 18). Tighten each fitting connection as shown in Figure 16, above.2. Locate the #10 compressor A/C hose. Lubricate (2) #10 O-rings (See Figure 16, above) and connect the #10 135° female fitting w/ R134a service port to the #10 suction port on the compressor. Route the 90° female fitting to the #10 evaporator (See Figure 12a, Page 13, and Figure 18, Page 18). Tighten each fitting connection as shown in Figure 16, above.3. Locate the #6 evaporator A/C hose. Lubricate (2) #6 O-rings (See Figure 16, above) and connect the 90° female fitting to the #6 hardline coming through the core support from the drier. Route the 90° female fitting to the #6 evaporator (See Figure 12a, Page 13, and Figure 18, Page 18). Tighten each fitting connection as shown in Figure 16, above.
1970-73 Camaro Standard Hose Kit1. Locate the #8 compressor A/C hose. Lubricate (2) #8 O-rings (See Figure 16, above) and connect the 90° female fitting w/ R134a service port to the #8 discharge port on the compressor. Route the 45° female fitting to the #8 condenser hardline coming through the core support (See Figure 17, Page 17). Tighten each fitting connection as shown in Figure 16, above.2. Locate the #10 compressor A/C hose. Lubricate (2) #10 O-rings (See Figure 16, above) and connect the #10 135° female fitting w/ R134a service port to the #10 suction port on the compressor. Route the 90° female fitting to the #10 evaporator (See Figure 12a, Page 13, and Figure 17, Page 17). Tighten each fitting connection as shown in Figure 16, above.3. Locate the #6 evaporator A/C hose. Lubricate (2) #6 O-rings (See Figure 16, above) and connect the 45° female fitting to the #6 hardline coming through the core support from the drier. Route the 90° female fitting to the #6 evaporator (See Figure 12a, Page 13, and Figure 17, Page 17). Tighten each fitting connection as shown in Figure 16, above.
Figure ##
O-ring Installs Over Male Insert to Swaged Lip
O-ring#6 O-ring
#8 O-ring #10 O-ring
O-ring
Supplied Oil for O-rings
Male Insert
Female Nut
Hold With This Wrench
Twist With This Wrench
Lubricating O-rings For a proper seal of fittings: Install supplied O-rings as shown, and lubricate with supplied oil.
NOTE: Standard torque specifications:#6: 11 to 13 ft-lb.#8: 15 to 20 ft-lb.
#10: 21 to 27 ft-lb.
Figure 16
17901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 17 OF 29
A/C
& H
eate
r H
ose
Rou
ting
1970
-73
Cam
aro
Com
pres
sor
Saf
ety
Sw
itch
(Bin
ary
Type
)Scr
ew O
n D
rier
(Ref
er t
o Con
dens
erIn
stru
ctio
ns)
Fig
ure
17
#6
Drier
/Cor
eH
ardl
ine
0920
74(7
0-73
Cam
aro)
NO
TE:
Vin
tag
e A
ir S
yste
ms
Req
uir
e(2
) 5
/8
Hos
e N
ipp
les
(Not
Su
pp
lied
)
#6
Hos
e09
6082
Hos
eCla
mps
From
Htr
Cnt
rl V
lvTo
Eva
pora
tor
Hea
ter
Hos
es
FRO
M E
VAPO
RATO
R
TO W
ATE
R PU
MP
Heater Hose & Heater Control Valve Installation1. Route a piece of heater hose from the water pump to the top heater fitting of the heater core as shown in Figure 12a, Page 13, and Figure 17, below. Secure using hose clamps.2. Route a piece of heater hose from the intake to the bottom heater fitting of the heater core as shown in Figure 12a, Page 13, and Figure 17, below. NOTE: Install heater control valve in line with intake manifold (pressure side) heater hose, and secure using hose clamps as shown in Figure 17, below. Also note proper flow direction.
#10
Ade
lCla
mp
w/
10-3
2 x
1/2”
Pan
Hea
d Scr
eww
/ N
ut
#10
Suc
tion
Hos
e09
6073
#8
Dis
char
geH
ose
0960
83
Tie
Wra
pH
eate
r H
ose
(Hea
ter
Cnt
rlVa
lve/
Inta
ke)
0910
74-P
FD#
8 Con
d/Com
pH
ardl
ine
#6
Drier
/Con
dH
ardl
ine
0916
75
FRO
M IN
TAKE
MA
NIF
OLD
NO
TE:
Flow
Dir
ecti
on F
ollo
ws
Mol
ded
Arr
ow o
n V
alve
.
18901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 18 OF 29
A/
C &
Hea
ter
Hos
e R
outi
ng
19
74
-78
Cam
aro
(19
78
Cam
aro
Sh
own
)
Com
pres
sor
Saf
ety
Sw
itch
(Bin
ary
Type
)Scr
ew O
n D
rier
(Ref
er t
oCon
dens
erIn
stru
ctio
ns)
Fig
ure
18
#10
Ade
lCla
mp
w/
10-3
2 x
1/2”
Pan
Hea
d Scr
eww
/ N
ut
#6
Drier
/Cor
eH
ardl
ine
0916
81(7
4-77
Cam
aro)
or#
6 D
rier
/Cor
eH
ardl
ine
0916
79(7
8 Cam
aro)
#6
Drier
/Con
dH
ardl
ine
0916
75
#10
Suc
tion
Hos
e09
6073
#8
Dis
char
geH
ose
0960
81
NO
TE:
Vin
tag
e A
ir S
yste
ms
Req
uir
e(2
) 5
/8
Hos
e N
ipp
les
(Not
Su
pp
lied
)
#6
Hos
e09
6080
Hos
eCla
mps
From
Htr
Cnt
rl V
lvTo
Eva
pora
tor
Hea
ter
Hos
es
FRO
M E
VAPO
RATO
R
TO W
ATE
R PU
MP
Tie
Wra
pH
eate
r H
ose
(Hea
ter
Cnt
rlVa
lve/
Inta
ke)
#8
Con
dens
er/
Com
p H
ardl
ine
0916
80
Heater Hose & Heater Control Valve Installation1. Route a piece of heater hose from the water pump to the top heater fitting of the heater core as shown in Figure 12a, Page 13, and Figure 18, below. Secure using hose clamps.2. Route a piece of heater hose from the intake to the bottom heater fitting of the heater core as shown in Figure 12a, Page 13, and Figure 18, below. NOTE: Install heater control valve in line with intake manifold (pressure side) heater hose, and secure using hose clamps as shown in Figure 18, below. Also note proper flow direction.
FRO
M IN
TAKE
MA
NIF
OLD
NO
TE:
Flow
Dir
ecti
on F
ollo
ws
Mol
ded
Arr
ow o
n V
alve
.
19901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 19 OF 29
1. Install duct hoses as shown in Figure 21, Page 18.
2. Install 3/8” ID grommet (See Figure 19, below).
3. Route A/C wires through 3/8 ID grommet as shown on Figure 19, below (12 volt/ground/binary switch/ heater valve).
4. Install control panel assembly.
5. Plug the wiring harness into the ECU module on the sub case as shown in Figure 21, Page 20 (Wire according to wiring diagram on Pages 21 & 22).
6. Install glove box (See Figure 20, below).
7. Reinstall all previously removed items (battery tray & battery).
8. Fill radiator with at least a 50/50 mixture of approved antifreeze and distilled water. It is the owner’s responsibility to keep the freeze protection at the proper level for the climate in which the vehicle is operated. Failure to follow antifreeze recommendations will cause heater core to corrode prematurely and possibly burst in A/C mode and/or freezing weather, voiding your warranty.
9. Double check all fittings, brackets and belts for tightness.
10. Vintage Air recommends that all A/C systems be serviced by a certified automotive air conditioning technician.
11. Evacuate the system for a minimum of 45 minutes prior to charging, and leak check prior to servicing.
12. Charge the system to the capacities stated on the information page (Page 4) of this instruction manual.
13. See Operation of Controls procedures on Page 23.
1. Install glove box provided, and secure with OEM screws through OEM holes (See Figure 20, below).
2. Install glove box door.
3/8” ID Grommet33144-VUI
FirewallCover
Final Steps
Glove Box Installation
Glove Box
Figure 20a
NOTE: If equipped with the glove box light as shown below in Figure 20a, modify plastic glove box using template provided on Page 25.
Figure 20
Figure 19
20901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 20 OF 29
Center LouverPassenger Side
2 ½” X 25”
Passenger SideLouver
2 ½” X 47”
Driver Side Louver
2 ½” X 40”Center Louver
Driver Side2 ½” X 25”
Driver SideDefrost Duct
2” X 22”
Passenger SideDefrost Duct
2” X 12”
Control Panel & Duct Hose Routing
Back Sideof PC Board
Assembly
Control PanelHarness
From ECU232007-VUR
Figure 21
Figure 22
21901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 21 OF 29
WHT/GRN
WHT/YELWHT/RED
RED
WHTBACKLIGHT NEG
FAN WIPER
MODE WIPER
TEMP WIPER
5V-SW
GND
BACKLIGHT POS
AC ANNUNCIATOR
PRE-WIRED
GEN IV WIRING DIAGRAMREV D, 5/6/2014
GEN IV ECU
PROGRAM
Wiring Diagram
TEMP
MODE
FAN
A/C(IF USED)
232007-VUR
232002-VUA
** CIRCUITBREAKER30 AMP
*** WIDE OPENTHROTTLESWITCH
(OPTIONAL)
* DASH LAMP(IF USED)
Dash Lamp Is Used Only With Type 232007-VUR Harness.Warning: Always Mount Circuit Breaker As Close to the Battery As Possible. (NOTE: Wire BetweenBattery and Circuit Breaker Is Unprotected and Should Be Carefully Routed to Avoid a ShortCircuit).Wide Open Throttle Switch Contacts Close Only at Full Throttle, Which Disables A/C Compressor.
JF8
BLK
ORA
TAN
VIEWED FROM WIRE SIDE
••
•
HEATERCONTROL VALVE
22901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 22 OF 29
RED
CIRCUIT BREAKER30 AMP
+
+
-
BLACK
REDWHITE
RED
CHASSIS GROUND
A/CCOMPRESSOR
RELAY
Ignition Switch:
Dash Light:
NOTE: MOUNT RELAYIN DESIRED LOCATION
UNDER DASH
GREEN
FIREWALL
BLUE
BLUE
RED &
WHITE
VIOLET
(IGNITION HOTTERMINAL)
IGNITION SWITCH
DASH BACK LIGHT+0-12vTAN
GRAY
BLUE
WHITE
WHITE
REDRED
WHITE
COMPRESSOR
BATTERY
NOTE: CONNECT WHITEWIRES DIRECTLY TO
(-) BATTERY TERMINAL
BATRUN
12V
RED GREEN
RED
RED
BLUE
LATCH
BLACK
BINARYSAFETYSWITCH
YELLOW
ORANGE
WIRING HARNESS
Violet 12V Ign Switch Source (Key On Accessory) Position Must Be Switched.
Tan Wire Used Only With Vintage Air Supplied Control Panel With LED Back Light.
Binary: Connect As Shown (Typical Compressor Wiring). Be Sure Compressor Body Is Grounded.
Trinary Switch: Connect According To Trinary Switch Wiring Diagram.
Install With Servo Motor Facing Down, As Shown. Note Flow Direction Arrow Molded Into Valve Body, And Install Accordingly.
White Must Run To (-) Battery. Red May Run To (+) Battery Or Starter. Mount Circuit Breaker As Close to Battery As Possible.
Heater Control Valve:
Binary/Trinary & Compressor:
Circuit Breaker/Battery:
CONTROL WIRING HARNESS
NOTE: YELLOW & ORANGE
COMING FROM HARNESS ARE NOT
USED.
WIRING HARNESS
GRAY WIRE IS USED FOR PROGRAMING CONTROLS
IF APPLICABLE
WIRING HARNESS
Gen IV Wiring Connection Instruction
HEATERCONTROL VALVE
WARNING: ALWAYS MOUNT CIRCUIT BREAKER
AS CLOSE TO THE BATTERY AS POSSIBLE. (NOTE: WIRE BETWEEN BATTERY AND CIRCUIT BREAKER IS UNPROTECTED
AND SHOULD BE CAREFULLY ROUTED TO AVOID A SHORT CIRCUIT).
NOTE: HEATER CONTROL VALVE CONNECTION AND CHASSIS GROUND MAY BE LOCATED ON EITHER SIDE OF THE FIREWALL. ENSURECONNECTOR IS LATCHED
FIRMLY.
23901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 23 OF 29
A/C Operation
Heat Operation Defrost Operation
DASH
DASH DASH
HOT
HOT HOT
ModeLever
TemperatureLever
Blower Speed
NOTE:A/C operation toggles
on & off when temperature lever
is moved to the HOT or COLD ends of travel. A/C mode is
indicated by the blue A/C light.
Operation of ControlsOn Gen IV systems with three lever/knob controls, the temperature control toggles between economy/heat andA/C operations. To activate A/C, move the temperature lever all the way to COLD and then back it off to the desired vent temperature. For economy/heat operation, move the temperature lever all the way to HOT and thenadjust to the desired vent temperature. The blower will momentarily change speed each time you toggle between operations to indicate the change.
Blower SpeedAdjust to desired
speed.Slide the lever all
the way leftfor DASH mode.
Mode Lever Temperature Lever
For A/C operation, slide the temperature lever all the
way right to engage compressor (Slide lever left or right to adjust to desired temperature).
Blower SpeedAdjust to desired
speed.
Temperature LeverSlide the temperature lever all the way leftto the HOT position
(Slide lever left or rightto desired temperature).
Slide the lever tothe center position
for FLR mode.
Mode Lever
Temperature Lever
Adjust to desiredspeed.
Blower Speed
Slide the lever allthe way rightfor DEF mode.
Mode Lever
Adjust lever todesired temperature
(Compressor is automatically
engaged).
24901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 24 OF 29
Sym
pto
m
C
on
dit
ion
C
heck
s
Act
ion
s
N
ote
s
Blo
wer
sta
ys o
n
hig
h s
pee
d w
hen
ig
nitio
n is
on.
1a.
No o
ther
funct
ions
work
.
Chec
k fo
r dam
aged
pin
s or
wires
in c
ontr
ol hea
d p
lug.
Ver
ify
that
all
pin
s ar
e in
sert
ed into
plu
g.
Ensu
re t
hat
no
pin
s ar
e ben
t or
dam
aged
in E
CU
.
Chec
k fo
r dam
aged
gro
und
wire
(white)
in c
ontr
ol hea
d
har
nes
s.
Ver
ify
continuity
to c
has
sis
gro
und w
ith w
hite
contr
ol
hea
d w
ire
at v
ario
us
poin
ts.
Loss
of gro
und o
n t
his
wire
render
s co
ntr
ol hea
d
inoper
able
.
All
oth
er f
unct
ions
work
.Chec
k fo
r dam
aged
blo
wer
sw
itch
or
pote
ntiom
eter
and
asso
ciat
ed w
irin
g.
Blo
wer
sta
ys o
n
hig
h s
pee
d w
hen
ig
nitio
n is
on o
r off.
Unplu
g 3
-wire
BSC c
ontr
ol
connec
tor
from
ECU
. If
blo
wer
sh
uts
off,
ECU
is
eith
er
impro
per
ly w
ired
or
dam
aged
.
Be
sure
the
smal
l, 2
0 G
A w
hite
gro
und w
ire
is c
onnec
ted
to t
he
bat
tery
gro
und p
ost
. If
it
is,
repla
ce t
he
ECU
.
Unplu
g 3
-wire
BSC c
ontr
ol
connec
tor
from
ECU
. If
blo
wer
st
ays
runnin
g,
BSC is
eith
er
impro
per
ly w
ired
or
dam
aged
.
Chec
k to
ensu
re t
hat
no B
SC w
irin
g is
dam
aged
or
short
ed t
o v
ehic
le g
round.
The
BSC o
per
ates
the
blo
wer
by
gro
und s
ide
puls
e w
idth
modula
tion s
witch
ing.
The
posi
tive
wire
to t
he
blo
wer
will
alw
ays
be
hot.
If th
e “g
round”
side
of
the
blo
wer
is
short
ed t
o c
has
sis
gro
und,
the
blo
wer
will
run o
n H
I.
Rep
lace
BSC (
This
will
req
uire
rem
oval
of ev
apora
tor
from
veh
icle
).N
o o
ther
par
t re
pla
cem
ents
sh
ould
be
nec
essa
ry.
Com
pre
ssor
will
not
turn
on
(All
oth
er funct
ions
work
).
2.
Sys
tem
is
not
char
ged
.Sys
tem
must
be
char
ged
for
com
pre
ssor
to e
ngag
e.Char
ge
syst
em o
r byp
ass
pre
ssure
sw
itch
.
Dan
ger:
Never
byp
ass
sa
fety
sw
itch
wit
h
en
gin
e r
un
nin
g.
Seri
ou
s in
jury
can
resu
lt.
Sys
tem
is
char
ged
.
1b
.
Tro
ub
lesh
oo
tin
g G
uid
e
Chec
k fo
r fa
ulty
A/C
pote
ntiom
eter
or
asso
ciat
ed
wirin
g (
Not
applic
able
to 3
-pot
contr
ols
).
Chec
k fo
r dis
connec
ted o
r fa
ulty
ther
mis
tor.
Chec
k co
ntinuity
to g
round o
n w
hite
contr
ol hea
d w
ire.
Chec
k fo
r 5V o
n r
ed c
ontr
ol hea
d w
ire.
Chec
k 2-p
in c
onnec
tor
at E
CU
housi
ng.
To c
hec
k fo
r pro
per
pot
funct
ion,
chec
k vo
ltag
e at
w
hite/
blu
e w
ire.
Voltag
e sh
ould
be
bet
wee
n 0
V a
nd
5V,
and w
ill v
ary
with p
ot
leve
r posi
tion.
Dis
connec
ted o
r fa
ulty
ther
mis
tor
will
cau
se
com
pre
ssor
to b
e dis
able
d.
Red
wire
at A
/C p
ot
should
hav
e ap
pro
xim
atel
y 5V
with ignitio
n o
n.
White
wire
will
hav
e co
ntinuity
to
chas
sis
gro
und.
White/
Blu
e w
ire
should
var
y bet
wee
n 0
V a
nd 5
V w
hen
le
ver
is m
oved
up o
r dow
n.
3. Com
pre
ssor
will
not
turn
off
(A
ll oth
er funct
ions
work
).
Chec
k fo
r fa
ulty
A/C
pote
ntiom
eter
or
asso
ciat
ed
wirin
g.
Chec
k fo
r fa
ulty
A/C
rel
ay.
Rep
air
or
repla
ce p
ot/
contr
ol w
irin
g.
Rep
lace
rel
ay.
See
blo
wer
sw
itch
chec
k pro
cedure
.
25901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 25 OF 29
Sym
pto
m
C
on
dit
ion
Ch
eck
s
Act
ion
s
N
ote
s
Sys
tem
will
not
turn
on,
or
runs
inte
rmitte
ntly.
4.
Work
s w
hen
engin
e is
not
runnin
g;
shuts
off w
hen
en
gin
e is
sta
rted
(T
ypic
ally
ear
ly G
en I
V,
but
poss
ible
on a
ll ve
rsio
ns)
.
Nois
e in
terf
eren
ce f
rom
either
ig
nitio
n o
r al
tern
ator.
Inst
all ca
pac
itors
on ignitio
n c
oil
and a
lter
nat
or. E
nsu
re
good g
round a
t al
l poin
ts.
Rel
oca
te c
oil
and a
ssoci
ated
w
irin
g a
way
fro
m E
CU
and E
CU
wirin
g.
Chec
k fo
r burn
edor
loose
plu
g w
ires
.
Ver
ify
connec
tions
on p
ow
er
lead
, ig
nitio
n lea
d,
and b
oth
white
gro
und w
ires
.
Ver
ify
pro
per
met
er f
unct
ion b
y ch
ecki
ng t
he
conditio
n o
f a
know
n g
ood b
atte
ry.
Ignitio
n n
ois
e (r
adia
ted o
rco
nduct
ed)
will
cau
se t
he
syst
em t
o s
hut
dow
n d
ue
tohig
h v
oltag
e sp
ikes
. If
this
is s
usp
ecte
d,
chec
k w
ith a
qual
ity
osc
illosc
ope.
Spik
esgre
ater
than
16V w
ill s
hut
dow
n t
he
ECU
. In
stal
l a
radio
cap
acitor
at t
he
posi
tive
post
of th
e ig
nitio
nco
il (S
ee r
adio
cap
acitor
inst
alla
tion b
ulle
tin).
A
faulty
alte
rnat
or
or
worn
out
bat
tery
can
als
o r
esult
in t
his
conditio
n.
Will
not
turn
on u
nder
an
y co
nditio
ns.
Ver
ify
bat
tery
voltag
e is
gre
ater
than
10 v
olts
and les
sth
an 1
6.
Loss
of m
ode
door
funct
ion.
No m
ode
chan
ge
at a
ll.Chec
k fo
r dam
aged
mode
switch
or
pote
ntiom
eter
and
asso
ciat
ed w
irin
g.
Part
ial fu
nct
ion o
f m
ode
doors
.
Typic
ally
cau
sed b
y ev
apora
tor
housi
ng
inst
alle
d in a
bin
d in t
he
vehic
le.
Be
sure
all
mounting loca
tions
line
up
and d
on’t h
ave
to b
e fo
rced
in
to p
osi
tion.
Blo
wer
turn
s on
and o
ff r
apid
ly.
6.
Bat
tery
voltag
e is
at
leas
t 12V.
Chec
k fo
r at
lea
st 1
2V a
t ci
rcuit b
reak
er.
Ensu
re a
ll sy
stem
gro
unds
and p
ow
er c
onnec
tions
are
clea
n a
nd t
ight.
Bat
tery
voltag
e is
les
s th
an 1
2V.
5.
Tro
ub
lesh
oo
tin
g G
uid
e (
Co
nt.
)
Chec
k fo
r fa
ulty
bat
tery
or
alte
rnat
or.
Char
ge
bat
tery
.
Sys
tem
shuts
off b
low
er a
t 10V.
Poor
connec
tions
or
wea
k bat
tery
can
cau
se
shutd
ow
n a
t up t
o 1
1V.
7. When
ignitio
n is
turn
ed o
n,
blo
wer
m
om
enta
rily
co
mes
on,
then
sh
uts
off.
This
occ
urs
with t
he
blo
wer
sw
itch
in
the
OFF
posi
tion.
This
is
an indic
ator
that
the
syst
em h
as b
een r
eset
. Be
sure
the
red p
ow
er w
ire
is o
nth
e bat
tery
post
, an
d n
ot
on a
sw
itch
ed s
ourc
e. A
lso,
if
the
syst
em is
pulle
d b
elow
7V f
or
even
a s
plit
sec
ond,
the
syst
em w
ill r
eset
.
Run r
ed p
ow
er w
ire
direc
tly
to b
atte
ry.
Chec
k fo
r posi
tive
pow
er a
t hea
ter
valv
e gre
en w
ire
and
blo
wer
red
wire.
Chec
k fo
r gro
und o
n c
ontr
ol hea
d w
hite
wire.
Chec
k fo
r obst
ruct
ed o
r bin
din
g m
ode
doors
.
Chec
k fo
r dam
aged
ste
pper
m
oto
r or
wirin
g.
Err
atic
funct
ions
of
blo
wer
, m
ode,
te
mp,
etc.
Chec
k fo
r dam
aged
sw
itch
or
pot
and a
ssoci
ated
wirin
g.
Rep
air
or
repla
ce.
8.
26901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 26 OF 29
CUT ALONGDOTTED LINE
CU
T A
LON
GD
OTT
ED L
INE
Kick Panel Modification Template
27901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 27 OF 29
4.5
00
0”
DRILL 3
/16
”H
OLES
CU
T ALO
NG
DO
TTED LIN
E
Center Louver Template
19
70
-78
Cam
aro
wo
A/
CC
en
ter L
ou
ver
Tem
pla
te
28901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 28 OF 29
1 ⅜
”
Tem
pla
te
3/4”
Cu
t A
lon
gD
otte
d L
ine 1”
Glo
ve B
ox L
igh
t Te
mp
late
901196 REV C 12/10/15, INST 1970-78 CAMARO wo AC EVAP KIT PG 29 OF 29
Accessory Kit781178
4-Vent Evaporator Sub Case w/ 204 ECU
744004-VUE
1.2.
11
744004-VUE781178
4-Vent Evap orator Sub Case w/ 204 ECUAccessory Kit 1970-78 Camaro wo A/C
No. Qty. Part No. Description
Packing ListEvaporator Kit (561173)
NOTE: Images may not depict actual parts and quantities. Refer to packing list for actual parts and quantities.
Checked By:Packed By:
Date:
1
2