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Fuse box diagram (fuse layout), location, and assignment of fuses and relays Jeep CJ-7 and Scrambler CJ-8 (1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986).
Checking and Replacing Fuses
A fuse is an element for protecting the electrical system. A fuse will trip (i.e. it will blow) in the event of a failure or improper interventions in the electrical system.
If an electrical device is not working, check whether the respective fuse is blown. Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Check those fuses first that protect the failed component, but check all the fuses before deciding that a blown fuse is not the cause. Replace any blown fuses with another with the same amperage (same color) and check the component’s operation.
Notice
- Before changing a fuse, check the ignition key has been removed and that all the other electric devices have been turned off/disabled.
- Never replace a broken fuse with anything other than a new fuse. Always use a fuse of the same color.
- Never change a fuse with another amperage. This can cause damage to the electrical system and fire.
- If the fuse blows again, have the vehicle inspected at a qualified service center.
Passenger Compartment Fuse Box Diagram
The fuses are underneath the dashboard on the driver’s side.
| № | A | Protected Component |
|---|---|---|
| 1 | 4.5 | Windshield wipers |
| 2 | 15 | Turn signals |
| 3 | 10 | Accessories |
| 4 | 3 | Instrument and accessory lights |
| 5 | 20 | Interior lights |
| 6 | 20 | Brake, tail and parking lights |
| 7 | 25 | Air conditioner, heater and electric fan |
| 8 | 3 | Instruments |
| 9 | 10 | 6-cyl.: Seat belt warning and back-up lights |
| 20 | 4-cyl.: Seat belt warning and back-up lights | |
| 10 | 20 | Hazard flasher, clock and stop lights |
| R1 | Hazard flasher | |
| R2 | Turn signal | |
- All Jeep models are equipped with fusible links, located in the engine compartment, which protect the circuits.
- 24A circuit breaker is located in the headlight switch to protect the headlight circuit.
- The 6-cyl models have a 4A in-line fuse protecting the cruise control. The V8 models have a 1.5A in-line fuse protecting the cruise control.
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