Jeep Wrangler YJ (1987 – 1995) – fuse and relay box diagram
Year of production: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1995
This article focuses on the first-generation Jeep Wrangler (YJ), manufactured between 1987 and 1995. It includes fuse box diagrams for the 1987–1995 models, details the locations of the fuse panels within the vehicle, and provides information on the function and layout of each fuse and relay.
Passenger compartment fuse box
Fuse Box Location
It is located under the dashboard.
Fuse Box Diagram
Assignment of the fuses under the instrument panel
| No. | A | Description |
|---|---|---|
| 1 | 20 | ’90-’95: Rear Window Wiper, Rear Window Washer (’91) |
| 2 | 20 | ’91: Horn |
| 3 | 15 | Stoplights, Underhood Light (’87-’91), Hazard Warning (’87-’91), Buzzer (’92-’95) |
| 4 | 15 | Turn Signals, Back-Up Lights (’87-’91) |
| 5 | 20 | ’87-’91: Courtesy Light, Cargo Light, Glove Box Light, Radio (’91) |
| 10 | ’92-’95: Automatic Shutdown Relay, Fuel Pump Relay (’93-’95) Engine Control Module (’93-’95) | |
| 6 | 25 | Rear Window Defogger |
| 7 | 30 | ’87-’92: Cigarette Lighter, Cruise Control, Radio, Rear Window Washer (’90) |
| 20 | ’93-’95: Cigarette Lighter Radio, Radio Illumination | |
| 8 | 20 | ’87-’91: Headlamp Switch (Parking Lights), Turn Signal Switch |
| 20 | ’92: Running Lights, Exterior Lights | |
| 20 | ’93-’95: Parking Lights, Key-In Warning Switch, Panel Lights Radio Relay, Headlight Switch, Side Marker Lights | |
| 9 | 15 | ’87-’91: Gauge Package, Seat Belt Indicators, Defogger Switch, Tachometer, Indicator Lights |
| 15 | ’92-’95: Buzzer, Gauges, Warning Lights, Relays, Back-up Lamps, Key-In Switch | |
| 10 | 5 | Instrument Panel Illumination, Parking Lights (’97-’88) |
| 11 | 6.7 | Circuit Breaker (’89): Windshield Wipers |
| 5.3 | Circuit Breaker (’90-’91): Windshield Wipers, Washers | |
| 12 | 25 | Blower Motor |
| 13 | 6.7 | Circuit Breaker (’87-’88): Windshield Wipers |
| Relay | ||
| R1 | Hazard Flasher | |
| R2 | Turn Signal Flasher | |
Fusible Links (’87-’90)
Assignment of the fuses (fusible links)
| No. | AWG | Color | Description | Location |
|---|---|---|---|---|
| 1 | 18 | GRN | Headlight Switch, Lights | 4.2L: Next to starter solenoid 2.5L: Next to starter solenoid, near starter |
| 2 | 18 | GRN | Ignition Switch | 4.2L: Next to starter solenoid 2.5L: Next to starter solenoid, near starter |
| 3 | 18 | GRN | Manifold Heater Relay, Rear Window Defogger | 4.2L: Next to starter solenoid 2.5L: Next to starter solenoid, near starter |
| 4 | 14 | BRN | 4.2L: Alternator | Next to starter solenoid |
| 18 | GRN | 2.5L: Alternator | Next to starter solenoid, near starter | |
| 14 | BRN | 2.5L: Alternator | Next to starter solenoid, near starter | |
| 5 | 18 | GRN | 2.5L: B+ Relay, Diagnostic Connectors, ECU, Fuel Pump Relay | Next to starter solenoid, near starter |
’91-’95: Cruise Control Fuse – Taped to harness, near cruise control module
Fuse Box Diagram (1992-1995)
Assignment of the fuses in the engine compartment (1992-1995)
| No. | A | Description |
|---|---|---|
| 1 | 30 | Fuel Pump, Automatic Shut Down |
| 2 | 50 | Alternator |
| 3 | 50 | Battery ACC |
| 4 | 40 | Ignition and Starter |
| 5 | 20 | ’91: Fog Lamps |
| 20 | ’92-’95: Hazard Flasher | |
| 6 | 50 | Alternator |
| 7 | 30 | Headlamp |
| 8 | 20 | Ignition Off Draw, Horn (’92-’95) |
| 9 | 40 | ’92-’95: ABS Pump Relay |
| 10 | 30 | ’92-’95: ABS Power Relay |
| 11 | – | – |
| 12 | – | – |
| 13 | 2 | ’92-’95: ABS Control Module |
| 14 | – | – |
| 15 | 10 | ’92-’95: Horn, Horn Relay |
| 16 | 10 | ’92-’95: Radio Memory, Clock Memory, Ignition Off Draw |
| Relay | ||
| A | ’92-’95: Horn | |
| B | Fuel Pump | |
| C | ’91: Air Conditioner Compressor Clutch | |
| ’92-’95: ABS Pump | ||
| D | ’91: Auto Shutdown | |
| ’92-’95: Air Conditioner Compressor Clutch | ||
| E | ’91: Starter | |
| ’92-’95: Automatic Shut Down | ||
| F | ’91: Fog Lamp | |
| ’92-’95: Starter | ||
| G | ’92-’95: ABS | |
Relay
Assignment of the fuses in the engine compartment (relay)
| No. | Description | Location |
|---|---|---|
| 1 | ’87-’90: B+ Latch | At right side of battery |
| 2 | Rear Window Defogger | At lower left kick panel, behind parking brake pedal |
| 3 | ’87-’90: Fog Light | Behind left headlight |
| 4 | ’87-’90: Fuel Pump | At right side of battery |
| 5 | Horn | Above and to left of fuse block |
| 6 | ’87-’90: Idle Speed | At right of battery |
| 7 | 4.2L (’87-’90): Manifold Heater | At right of battery |
| 8 | 2.5L (’87-’88): Starter | Near battery |
| ’89-’90: Starter | On battery tray bracket, to left of battery |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market