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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: jt1200r on July 16, 2011, 01:15:46 pm

Title: brake lites
Post by: jt1200r on July 16, 2011, 01:15:46 pm

my rear brake,signal and hazard lites dont work. the running and backup lites work. the front and dash signal lites work. any ideas what it could be ? its a 87 r10 step side .Thanks

Title: Re: brake lites
Post by: 1979C20 on July 16, 2011, 01:41:03 pm

Wiring under the bumper, and its "lights".

Title: Re: brake lites
Post by: jt1200r on July 16, 2011, 03:43:56 pm

i dont have a rear bumper. my tag lites dont work either

Title: Re: brake lites
Post by: 1979C20 on July 16, 2011, 05:24:33 pm

Under where the bumper bolts to the frame. Like, under the bed at the very end of the truck.

Title: Re: brake lites
Post by: 1979C20 on July 16, 2011, 05:25:14 pm

Also, check brake light fuse.

Title: Re: brake lites
Post by: jt1200r on July 16, 2011, 08:33:09 pm

fuse is good. i checked the ground thats about the center of the bed in the rear

Title: Re: brake lites
Post by: 1979C20 on July 16, 2011, 10:28:10 pm

Check the whole wiring harness under it.

Title: Re: brake lites
Post by: Irish_Alley on July 17, 2011, 12:01:59 am

like 79 was saying there should be a junction where the bumper used to be where the wires are split up. sometimes p.o. will mess with them and sometime later it will just fail

Title: Re: brake lites
Post by: jt1200r on July 17, 2011, 07:42:33 am

ill be checking that today

Title: Re: brake lites
Post by: jt1200r on July 17, 2011, 10:07:19 am

got them working. the little tits on one bulb werent contacting and the connecter on the other side went bad. crazy that 2 different things go bad at the same time. thanks for all the suggestions

Title: Re: brake lites
Post by: Irish_Alley on July 17, 2011, 10:46:44 am

The turn signal and brake lights are the same filament