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Old 04-17-2017, 07:21 PM   #3
ray_mcavoy
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Join Date: Nov 2009
Location: Sherman, ME
Posts: 2,354
Re: Tail light/brake light harness plug in.

What year truck?

If it's a 62-66 or 67-72, the intermediate harness should have a molded rubber connector that fits into a hole in the firewall and also serves as a grommet. The dash harness should have a 3 or 4 wire (depending on the year) connector that plugs directly into the intermediate harness right where it goes into the firewall.
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