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73-87 Chevy _ GMC Trucks => Electrical => Topic started by: muddpuppy01 on December 11, 2011, 10:06:00 pm

Title: running lights wire location
Post by: muddpuppy01 on December 11, 2011, 10:06:00 pm

I am having a problem with my running lights. Meaning they don't work on the rear. Both left and right with the tag light. Brake lights work. I am looking to see if some one knows where the main junction is that connects the front lights to the rear lights.

Truck is a 83 k20 long bed

Title: Re: running lights wire location
Post by: bd on December 11, 2011, 11:29:58 pm

The rear running light circuit is spliced to the front running lights on the inside of the cab behind the fuse block at a bulkhead connector pin.

http://forum.73-87chevytrucks.com/smforum/index.php/topic,11766.0.html (http://forum.73-87chevytrucks.com/smforum/index.php/topic,11766.0.html)

Ckt 9 - The brown (running lights) wire generally runs the left framerail to a bulkhead plug dedicated to the rear lamps, then into the cab to the headlamp switch and then to the fuse block.  It often shares a multi-wire loom with one light green (back-up), one dark green (left turn/brake) & one yellow (right turn/brake) wires. 

Have you already checked the bulbs and fuses?

Title: Re: running lights wire location
Post by: DnStClr on December 17, 2011, 05:58:02 pm

muddpuppy- I've sent you a pm (private message)

Title: Re: running lights wire location
Post by: muddpuppy01 on December 19, 2011, 04:44:02 pm

update I ended up replacing the headlight switch to resolve my issue

Title: Re: running lights wire location
Post by: bd on December 19, 2011, 08:06:54 pm

Glad you figured it out.