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Old 05-11-2015, 05:38 PM   #1
gramps77
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Join Date: Oct 2011
Location: Plumas Lake, CA
Posts: 386
new tail light harness

I haven't easily found anywhere to get a new tail light harness. anyone have any info? Mine has had trailer wiring spliced into it and Id like to just get a new whole harness.
With that being said, where does it plug into the front of the truck at? Wheres the next junction up from the tail lights?
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Old 05-11-2015, 06:12 PM   #2
ray_mcavoy
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Join Date: Nov 2009
Location: Sherman, ME
Posts: 2,366
Re: new tail light harness

American Autowire and M&H Electric Fabricators both offer rear lamp harnesses for 1977 GM trucks. There are various options depending on your truck's wheelbase and bed type.

The rear light wiring is in 2 sections. There is an intermediate harness that runs from the bulkhead connector on the driver side of the firewall, down along the frame, and ends in a connector near the rearmost frame cross member. From there, the rear lamp harness contains the wiring that runs to the individual lights.
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Old 05-11-2015, 11:04 PM   #3
gramps77
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Join Date: Oct 2011
Location: Plumas Lake, CA
Posts: 386
Re: new tail light harness

awesome, thank you sir
Now to decide which one to use, M&H is a lot cheaper.
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