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73-87 Chevy _ GMC Trucks => Electrical => Topic started by: 86silverado on March 11, 2012, 04:05:12 pm

Title: Tail lights
Post by: 86silverado on March 11, 2012, 04:05:12 pm: Do you know what this could be? When i turn my ignition on my taillights come on, but my brake lights dont work they just stay on. and at night when i turn all lights on it blows instrument cluster fuse and lights on back go out. Do you have any idea where to start?
Title: Re: Tail lights
Post by: 454Man on March 11, 2012, 04:10:16 pm: Just a thought maybe the headlight switch.
Title: Re: Tail lights
Post by: 1980c10 on March 11, 2012, 09:06:07 pm: You may want to check all the bulb sockets for corrosion and plug ins in the harness. If you find something questionable unplug it and try it.
Title: Re: Tail lights
Post by: bake74 on March 12, 2012, 05:53:35 am: You have a short somewhere. I would start with the problem area's. You said brake lights stay on all the time. Take them apart and as 1980c10 stated, make sure they are not corroded all up.
Next check the headlight switch for a short as 454Man said, after that I would move on the ignition switch, it could be internal in the column.
Electrical shorts are a pain sometimes to run down, and there could be more than one causing a problem, keep your cool and take your time and you will track down the problems.
Title: Re: Tail lights
Post by: 86silverado on March 14, 2012, 05:00:05 pm: Thank you all. I will start tracking it down
Title: Re: Tail lights
Post by: 87454westernhauler on March 14, 2012, 06:37:40 pm: if your break lights are on all the time check the break light switch, they wear out sometimes and will just stay on all the time. could be alot of different things.
Title: Re: Tail lights
Post by: 86silverado on March 18, 2012, 04:46:09 pm: got it figured out! was in dimmer switch, also ground on rear taillights wasnt best, got it all working. Thanks guys
Title: Re: Tail lights
Post by: bake74 on March 19, 2012, 08:50:08 am: Glad to hear that all is fine now.