Radio, cigarette lighter, and cab light no longer work. Please help

[CHEVY4LLTHEWAY]

I was driving down the road today in my 87 and all of the sudden my radio quit working, and later on I realized the cigarette lighter and can light had quit working also. We put a new fuse in the radio slot on the fuse box but still none of them work. What could be the problem here. Would appreciate some help, thanks!

[ray_mcavoy]

Originally Posted by CHEVY4LLTHEWAY

We put a new fuse in the radio slot on the fuse box but still none of them work. What could be the problem here.

Check the "HORN / DM" fuse. I believe that's the one that powers the cigarette lighter and dome light.

If you have the optional digital stereo, the "HORN / DM" fuse also supplies constant battery power for the clock & radio station presets. And the digital stereos usually won't work without the constant battery power feed. The "RADIO" fuse only protects the switched power feed.

[03glide]

Did you ever figure out your trouble? My cab/cargo light, cigarette lighter, and horn aren't working. I replaced the 20 amp fuse and it blows immediately. Something is shorted or grounded and I was hoping to get a little head start from whatever was causing your problem.

Brian

[PAWS 72]

20-30glide, check for chaffed wires. Have you replaced the dome lite bulb lately? Trying to think of a few things first.check door jamb switches also.
Check the wires on back of cigarette lighter also they may be touching.

[03glide]

It was late last night before I took a look at it. Will get on it again this weekend. I did recently replace the dome bulb. I'm going to pull the cab and cargo housings and check the wiring with a volt ohmmeter to see if I see any short or ground.