1

Battery Control Center (Con’t)

2

Battery Control Center (Con’t)

MAXI

MAXI

F1 25A

F2 25A

F4 3A

F3 20A

F5 3A

F6 3A

F7 15A

F8 15A

F9 20A

F10 15A

F11 10A

F12 15A

F13 15A

Driver Pwr Seat

Pass Pwr Seat

LP Det (Chassis)

Step Motor

Step Switch

Ignition Signal

Spare IGN

Spare

Power Mirror

Horn

Leveling Jacks

Dash Fan

F22 3A AUX Start Relay Pwr

Fog Lights

F20

F15 3A

F16 10A

F17 3A

F18 3A

F19 5A*

F14 15A Luggage Bay Lights

Blank

LP Det (Coach)

Radio Switch

AUX Start Dash Switch

Solar Panel

Coach & Chassis Bat Disconnect Switch Coil Power

F21 15A Service Bay Lights

F23 10A* AUX Hot

* Changed to 10A by Rev H

* Changed to 5A by Rev J

Changed to circuit breakers by Rev K

3

Battery Disconnect Switches

4

Battery Control Center (Con’t)

• Battery Disconnect Switches

• Each switch controls a magnetically latched relay with power applied to coil only momentarily to latch the switch

• Unlatch by applying current in the other direction

• If chassis or coach battery is disconnected , it is automatically connected if ignition is switched on

• A lockout feature prevents disconnecting the chassis battery when the ignition switch is on

5

Battery Control Center (Con’t)

• What does NOT work with Coach battery disconnected:

• 12v Lighting / 12v Power Outlets • Water Pump / Dash Radio / Bedroom Radio• Furnace / Refrigerator / Water Heater• Air Conditioners• Generator

6

Battery Control Center (Con’t) • What does NOT work when Chassis battery

disconnected with ignition switch OFF:• Steps• Clearance lights• Fog lights• Slides• Leveling Jacks

• Turning On the ignition switch automatically causes both battery disconnect relays to change to the connected position

• The chassis battery cannot be disconnected using the disconnect switch with ignition ON

• The coach battery can be disconnected using the disconnect switch.

7

Battery Control Center (Con’t)

• What does NOT work when both Chassis battery and Coach battery are disconnected:

• Propane detector

• Propane automatic shutoff valve closes to prevent any propane use while the detector has no power

8

Battery Control Center (Con’t) • Charging and Auxiliary Starting Relay

• Located on back wall in electrical bay• Charging

• Automatically connects chassis and coach batteries in parallel to allow charging of both when:

• Either battery voltage reaches 13.2• Relay automatically isolates batteries from each other when

voltage drops to:• 12.6 with ignition off • 12.2 with ignition switch on.

• Auxiliary Starting• Dash switch used to connect chassis and coach

batteries in parallel while switch is held ON• Start engine with dead chassis battery• Start generator with dead coach battery

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Panel Lamp 10 Amp

Marker SW Pwr 15 Amp

Dome Lamp 10 Amp

Head Lamp 15 Amp

Marker Lamp 30 Amp

Tail Lamp 10 Amp

Air Drain Valve 15 Amp

Air Dryer 15 Amp

Instrument Cluster 10 Amp

IGN 3 30 Amp

ABS Pwr 2 10 Amp

ABS Pwr 1 10 Amp

Exhaust Brake Pwr 10 Amp

Turn Signal 10 Amp

DRL IGN Pwr 10 Amp

DRL MOD Pwr 10 Amp

Ignition 2 Relay FL# 23-11276-011

Marker Lamps Relay FL# 23-11276-011

ABS ECU Relay FL# 06-39301-000 DRL IGN Relay

Cruise Disengage Relay

Ignition Sense Relay

Air Dryer/Drain Valve Relay

ABS Light Relay

Left Headlamp Relay

Exhaust Brake Relay

Right Headlamp Relay

Park Brake Relay

Freightliner Panel #1 Under Dash

Freightliner Panel #2 Under DashNeutral

Sense Relay

Heater Relay

ACC 1 Relay

Service Brake Relay

Horn Relay

IGN Relay

Cab

Bat S

ply 2

20 Am

p

Cab

Bat S

ply 1

20 Am

p

Cab

Bat S

ply 3

20 Am

p

Heater R

elay S

ply 30 A

mp

Ho

rn S

ply

20 Am

Brake P

wr S

ply

20 Am

p

Maxi Fuses

WPR 25 Amp

ACC 1 10 Amp

ACC 2 10 Amp

IGN 1 10 Amp

IGN 2 10 Amp

Brake Lamp Relay

Fuel Pump Relay

VDC Bay

Freightliner 12 Volt Fuses and Relays

Cummins Engines Only

Exhaust Brake Relay

10

Thermostat

5 Amp1

Water Pump

15 Amp2

Bath fan, lights aft florescent 15 Amp

Kitchen fan, florescent. 20 Amp

BR radio, lights. 20 Amp

LR 12V Outlet 15 Amp

Energy Mgt System3 5 Amp

LR driver side lights 20 Amp

Appliances 20 Amp

Poarch, entry, fwd florescent 20 Amp

Sat Ant, TV Booster 15 Amp

LR passenger side lights 15 Amp

Bedroom Panel

Notes:

1. Also 2 Amp fuse in thermostat

2. Changed to 15 Amp for new water pump. Was 10 Amp

3. Also 3 Amp fuse on 50A Smart EMS circuit board

4. Also 10 Amp fuse in awning control box above passenger door

Left Turn 20 Amp

Electric4 Awning 15 Amp

Dash Radio 7.5 Amp

Clearance Lights 20 Amp

Right Turn 20 Amp

Stop Hazard 20 Amp

Electric Service Bay

Pass Seat Heater 7.5 Amp

Neutral Safety Common 10 Amp

ICC Power 15 Amp

Driver Seat Heater 7.5 Amp

15 Amp?

Power Visors 7.5 Amp

Cigarette Lighter 10 Amp

Condenser Fan 20 Amp

Heater Blower 30 Amp

Wipers 30 Amp

Backup Camera 3 Amp

Under Dash

Other 12 Volt Fuses and Relays

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Left Rear Leg 3 Amp

Right Rear Leg 3 Amp

Dump Valve 3 Amp

Front Legs 3 Amp

Leveling Jacks Controller – Located Under Dash Near Jack Controls

Relay Tyco VF4-15F13

Relay Tyco VF4-15F13

15 Amp Auto Reset CB

20 Amp Slow Blow Fuse

Relay Tyco VF4-15F13

Relay Tyco VF4-15F13

20 Amp Auto Reset CB

25 Amp Slow Blow Fuse

Relay Tyco VF4-15F13

Relay Tyco VF4-15F13

20 Amp Auto Reset CB

25 Amp Slow Blow Fuse

Slide Out Controller – Located in Electric Service Bay

Bedroom Slide Out

Co

nn

ec

tor

Co

nn

ec

tor

Co

nn

ec

tor

Driver Side Slide Out

Pass Side Slide Out

Power Gear Fuses and Relays

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Conclusion

• Inverters and Batteries are a good things

• Maintain and test your batteries

• Keep a supply of spare fuses and bulbs

• Get a copy of your wiring diagram

• Have the basic tools to troubleshoot problems

• Use the corporate knowledge of DOAI members for help