Where are the Fuse Boxes located in the 2003 Jeep Wrangler?

2003 Jeep Wrangler has 2 main boxes with fuses and relays. One is in the cabin (Passenger Compartment) and another is under the hood (Engine Compartment).

2003 Jeep Wrangler Under Dash Fuse Box and Relay Location 

To access the fuse panel the glove box must be removed. It is removed by slipping the glove box strap off the hook and letting the door roll down off its hinges. To reinstall, position the glove box door at an 8 o’clock orientation, engage the hinge hook formations on the lower edge of the glove box door with the hinge pins on the lower edge of the instrument panel. Tilt the upper edge of the glove box door upward toward the instrument panel enough to reattach the glove box strap to the door. Rotate glove box door to closed position. Open and close to insure proper installation.

2003 Jeep Wrangler Under Hood Fuse Box and Relay location

This power center houses plug-in “Cartridge” fuses, ISO relays, and Mini (Micro) fuses. A label inside the latching cover of the center identifies each component for ease of replacement, if necessary. Cartridge and mini (micro) fuses can be obtained from your authorized dealer.

2003 Jeep Wrangler under Dash Fuse Box Layout

2003 Jeep Wrangler under Dash Fuse Box and Relay Diagram

2003 Jeep Wrangler under Dash Fuse Box and Relay Details

Assignment of the fuses and relays in the Passenger compartment

No.Amp Rating(A)Description
120Headlamp Switch (Multi-Function Switch), Sentry Key Immobilizer Module
220Brake Lamp Switch
320Subwoofer, Radio Choke and Relay
410Driver Door Ajar Switch, Passanger Door Ajar Switch, Fog Lamp Relay No.1, Fog Lamp Relay No.2, Rear Fog Lamp Relay
510Airbag Control Module
620Rear Wiper Motor (Hard Top), Rear Wiper/Washer Switch (Hard Top)
710Park/Neutral Position (PNP) Switch (Automatic Transmission), Back-Up Lamp Switch (Manual Transmission), Controller Antilock Brake (ABS), Air Conditioner Compressor Clutch Relay, Rear Window Defogger Relay, ABS Relay
810A/C Heater Control, HVAC Unit, Blower Motor Relay, Blend Door Actuator
910Airbag Control Module, Passenger Airbag On/Off Switch
1010Brake Shift Interlock Solenoid, Instrument Cluster, Compass/Temperature Mirror
1110Daytime Running Lamp Module, Torque Converter Clutch Solenoid, Duty Cycle EVAP/Purge Solenoid, Air Conditioner Compressor Clutch Relay
1210Sentry Key Immobilizer Module, Fuel Pump Relay, Automatic Shut Down Relay, Powertrain Control Module, Oxygen Sensor Downstream Heater Relay, Oxygen Sensor Upstream Heater Relay
1310Turn Signal/Hazard Switch (Multi-Function Switch), Passenger Airbag On/Off Switch
1410Radio
1510Rear Window Defogger Switch (Hard Top)
1610Headlamp Leveling Motor, Headlamp Leveling Switch, Rear Fog Lamp Relay
1725Windshield Wiper Motor, Windshield Wiper Switch (Multi-Function Switch)
1820Cigar Lighter/Power Outlet, Switched Auxiliary Power
19Spare
2020Engine Starter Motor Relay, Clutch Pedal Position Switch (Manual Transmission)

2003 Jeep Wrangler Under Hood Fuse Box Layout

2003 Jeep Wrangler under Hood Fuse Box and Relay Diagram

2003 Jeep Wrangler under Hood Fuse Box and Relay Details

Assignment of the fuses and relays in the Engine compartment

No.Amp Rating(A)Description
140Blower Motor Relay (HEVAC)
240Rear Window Defogger Relay
340Fuse (Passenger Compartment): “1”, “2”, “3” / Exterior Lighting
440High Speed Radiator Fan, Low Speed Radiator Fan
5Not Used
630 Engine Starter Motor Relay, Ignition Switch (Fuse (Passenger Compartment): “5”, “6”, “7”, “8”)
7Not Used
840ABS Motor
930Automatic Shut Down Relay, Powertrain Control Module
1040HD/LP
1120Turn Signal/Hazard Switch / IOD Storage
1230ABS Valve
1340Ignition Switch (Fuse (Passenger Compartment): “17”, “18”, “19”)
14Not Used
1550 Fuse: “26” / IOD
1615Oxygen Sensor Downstream Heater Relay
1720Power Outlet
1820Horn Relay
1920Multi-Function Switch (Front Fog Lamps)
2015Radio
2110Air Conditioner Compressor Clutch Relay
2220Ignition Switch (Fuse (Passenger Compartment): “9”, “10”, “11”, “12”, “13”, “14”, “22”), Clutch Pedal Position Switch (Manual Transmission)
2320Fuel Pump Relay
2420Rear Locker Relay (Off-road Package), Front Locker (Off-road Package)
25Not Used
2610Dome Lamp, Instrument Cluster, Data Link Connector, Axle Lock Switch (Off-road Package), Courtesy Lamp, Compass/Temperature Mirror, Underhood Lamp
2720 Multi-Function Switch
2820Automatic Shut Down Relay, Ignition Coil, Fuel Injector, Coil Capacitor
Relay
R1Automatic Shut Down
R2Air Conditioner Compressor Clutch
R3Transmission Control
R4Engine Starter Motor
R5ABS
R6Oxygen Sensor Downstream Heater
R7 Fog Lamp
R8Horn
R9Fuel Pump
R10Rear Window Defogger
R11Front Locker (Off-road Package)
R12Rear Locker (Off-road Package)

WARNING: The terminal and harness assignments for individual connectors may vary depending on the vehicle’s equipment level, model, and market. It is recommended to refer to the fuse box diagram provided at the back of the fuse box cover for accurate information.

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