Fuse Usage
STUD A Spare
STUD B Spare
Relay Usage
NOTE 1
LLY/L18 Fuel Pump Relay,
LG4/LG5 Heated Fuel Relay
IGN B Ignition Relay
STARTER Starter Relay
HORN Horn Relay
IGN A Ignition Relay
PTO/ECU*
Power Take-Off/Engine Control Unit
(*Diesel 7.8L LG4)
REVERSE Reverse Relay
NEUTRAL
START
Neutral Start (LG4 Allison Automatic
Transmission Series 3000/3500)
Fuse Usage
IGN 1 Ignition 1
IGN 4 Ignition 4
IGN 3 Ignition 3
BATT/HAZ Battery/Hazard Warning Flashers
HEADLAMP Headlamps
LIGHTING Interior/Exterior Lamps
HVAC Climate Control System
NOTE
C4/C5 Electric Brake,
C6/C7/C8 Brake Lamps
Secondary Underhood
Fuse Block
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