Red88

In my 88 Cherokee the lights stopped working this week. I have no headlights, parking lights, dome light, dash backlights or taillights. I checked all fuses in the panel even though I believe some of these are separate fuses anyway. I thought the common link between all of these functions was the headlight switch so I replaced that but still have no lights.

Digging a little deeper I realized that I also have no power to the heater blower motor. I just finally got someone to help me check and I also have no brake lights.

Other electrical functions seem to work, wipers, turn signals work (but not hazards this could be unrelated I haven't tested the hazards before this in a long long time), dash warning lights, cigarette lighter, radio all work.

Any ideas?

Harper

It sounds as if a power feed to the fuse panel is dead. Is there power at the fuses for the lights, hazards, etc.?

With the key on, touch each side of each fuse with a test light. Note any that are dead on both sides as well as any blown fuses that only light on one side.

Someone else mentioned a power feed near the fuse block that plugs into the firewall. Unfortunately, I don't have access to my Jeep right now, so I have nothing to go by.

I attached a schematic for a 92... you can see these things are on separate circuits, so the problem is upstream of the fuse panel.

Harper

In Googling this problem, it seems to be a common theme on the 88's. Here are some quotes from other threads in this forum that I found interesting:

I see a lot pertaining to the wiring for the tail lights in the rear quarter panel. Inspect those carefully, especially where they exit the body through a grommet.

And one other thing I didn't think of... if the fuse is indeed blown, do you have a trailer light plug hanging loose under there or wrapped around a hitch? It may be damaged causing a short to ground.

This site has tons of wiring diagrams for Grand Wagoneers... most circuits are probably similar: http://oljeep.com/gw/elec/GW_wiring.html