The radio & lighter stopped working at the same time. I don't have a manual and not sure what fuse to check. 1991 Jeep Wrangler yj, thanks

SOURCE: Jeep wrangler Fuse box

i had the same problem. i drive a 95 so im not sure if it differs from were the fuse box is. look righ above you pedals to your far left. it should be right there. also if you instruments went out it will be a 15 fuse. its a blue fuse. next my panel went out cuz of the wires on my transmission. if yor looking at your jeep at the front. the wires will be on your left. make sure they are not burned or anything. it will be right on the side of your tranny. mind got burned by the exaust so they were shorting. check that is and see if that is what is it. for a temp fix just put some electrical tap around the wires and you should be set for a wile. good luck

SOURCE: 1991 JEEP YJ WRANGLER CLUTCH

Check clutch fluid. Also check for clutch fluid leaks. I just found out that I had the same problem.

It is a leak of clutch fluid (brake fluid) under the dashboard. My mechanic says it's a simple fix.

SOURCE: Jeep wrangler Fuse box

You have two locations for the fuse box. One is either under the hood or behind the glove box. I would pull apart the glove box and take a look.

SOURCE: 1998 Jeep Wrangler Electrical Short in Steering Column?

I had a similar problem with my 2000 Jeep TJ and I found the problem in the wiring harness under the hood.several wires were corroded and almost burnt off.If you remove the black tape which keeps the harness bundled together and if you see evidence of "green" type powder or "gook" it's most likely where the wires have faulted.

SOURCE: radio and cigarette lighter not working 1991 mercedes 190e

Spin or replace the fuse as the old aluminum fuses build up corrosion and dont work, or work on and off.

If its an after market radio check by removing unit and checking for fuses in line.