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Old 03-30-2014, 05:10 PM   #23
ray_mcavoy
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Join Date: Nov 2009
Location: Sherman, ME
Posts: 2,379
Re: The joys of wiring....1965 c10 harness blues

Quote:
Originally Posted by lha1992 View Post
Well guys here's my next question an its a odd one I don't understand what the heck the previous owners were thinking? Unless I'm overlooking something yet again but anyways in the picture below you'll see the mess underneath my dash but look closely at the neutral safety switch an you'll see a brown wire hooked up.

Now that brown wire goes all the way through the firewall to some hookup on the horn relay! As you'll see below the brown wire hooked to the horn relay.
The auto trans neutral safety switch also contains a set of contacts for reverse lights. They were an option on these trucks (and became standard equipment in '66). The 2 screw terminals on the horn relay are a BATT+ power distribution point.

It looks like someone added reverse lights to your truck and used the brown wire connected to the distribution point on the horn relay as their power source.

The factory installed reverse light wiring used a dark green power feed wire connected to the fuse box. Did they at least put an inline fuse in that brown wire?


Quote:
Originally Posted by lha1992 View Post
An here's the mess.
Yikes! That does look like a mess!

Quote:
Originally Posted by Dillon Rock View Post
... I also have a new wiring harness sitting under the bench in the garage for the cab. All complete as far as I know. All I did was snag a fuse block clip for my radio spot and that's all I did to it. I'll let ya have it for nothing.
Looks like you're all set with a good harness to replace that mess though
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