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- - 65 c10 overdrive help (https://67-72chevytrucks.com/vboard/showthread.php?t=791948)

whatleyr

08-16-2019 03:38 PM

65 c10 overdrive help

Quick question about the overdrive relay. I can't get my relay to actually operate without external power. Schematics say that power should come from the ACC on Ignition. I'm only getting 6 volts. When I bypass and run a wire from batter to relay it works and my overdrive is alive again. Thoughts? First instanct is that I have a bad ignition switch. This switch DOES crank the truck very well. Thanks for the posts.

The Rocknrod

08-16-2019 07:21 PM

Re: 65 c10 overdrive help

Grounds or the power wire to the relay is deteriorating ?

whatleyr

08-16-2019 07:57 PM

Re: 65 c10 overdrive help

If I had to guess, the power wire would be the problem. There is only one wire going from the ignition switch to the overdrive relay. This is a factory original truck. Overdrive hasn't been used since Nov '76.

whatleyr

08-17-2019 06:40 PM

Re: 65 c10 overdrive help

1 Attachment(s)

See what you think of this. I traced the power wire back to the fuse box. Any ideas or suggestions?

cwcarpenter98

08-17-2019 09:00 PM

Re: 65 c10 overdrive help

Check the inline fuse and see if the contact points are rusty. It's the white tube looking thing on the green wire

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