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73-87 Chevy _ GMC Trucks => Electrical => Topic started by: dalefan613 on July 14, 2013, 09:41:07 pm

Title: no dome light
Post by: dalefan613 on July 14, 2013, 09:41:07 pm

I have no dome light or cargo light. Not when doors open or use the light switch nothing!

Title: Re: no dome light
Post by: 79gmc15 on July 14, 2013, 09:46:07 pm

Does your horn work (its on the same circuit)? If not, check the fuse. I had a majorly rusted out, light socket for the dome light that caused a short and fried the fuse and some of the wiring.

Title: Re: no dome light
Post by: Powerdriver1958 on July 14, 2013, 10:24:19 pm

My not be your problem but on 3 of my squares where the orange and whites wire run under the threshold they were brittle and broken .

Title: Re: no dome light
Post by: twosocks90 on July 16, 2013, 09:20:00 am

You said "3 of my squares where the orange and whites wire run under the threshold they were brittle and broken". Can you explain what exactly you mean by that? I have the same problem -- no dome light but horn works.

Title: Re: no dome light
Post by: Powerdriver1958 on July 16, 2013, 12:57:07 pm

I guess I might not have used the correct name but the plate that holds the carpet in place at the bottom of the door frame on the drivers side . Under that plate the wire for the dome light is run under it . just remove the screws and pull it up . The dome light wires run under there in a groove. It's a two wire molded together deal one wire white the other orange . On mine I found that  insulation had cracked , water and crud had turned the wire black several inches back in both directions.

Also the dome light on these trucks are "ground to operate " .. The hot wire / bulb has power  full time . the ground wire runs to the door switches and headlight switch . so be careful if you are using jumper wires to test with . You could let some smoke out  :o

Title: Re: no dome light
Post by: Irish_Alley on July 17, 2013, 11:54:51 pm

could be the head light switch.i once had a dome light then i swapped my head light switch out then i lost my dome light. never got around to fixing it but it could also be a broken wire that i broke changing it

Title: Re: no dome light
Post by: Powerdriver1958 on July 18, 2013, 12:21:41 am

Sorry should have said the the orange is power from the fuse block , white is one that go's to the door switch's

Title: Re: no dome light
Post by: dalefan613 on July 18, 2013, 10:26:49 pm

Thanks guys I will check the threshold first then go from there

Title: Re: no dome light
Post by: PromiseKeeper on July 19, 2013, 01:13:33 pm

some custom deluxe models had no dome light switch in the door. The only interior light was turned on by turning the headlight switch to the left.

Title: Re: no dome light
Post by: dalefan613 on July 20, 2013, 10:40:14 am

I have a dome light and a cargo light none work ill look under the threshold and go from there