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Old 09-02-2020, 09:53 AM   #17
Planojc
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Join Date: May 2010
Location: Plano, Texas
Posts: 829
Default Re: Won't go into overdrive when hot.

I have found many stock relays with as much as a two volt drop on the output going to the solenoid, due to bad connections inside the relay. If you remove the cover you will see that all connections are made with rivets and over the years corrosion sets in and you get a voltage drop. The rivet connection where the fuse holder connects is usually a place to start. I clean all rivet connections and using a good flux, solder all these connections. You can also have a drop through the ignition switch. I have a test setup with a battery and sol. that I can use to check the voltage going in and out of the relay and after doing the above, if you have proper output from your charging circuit it will work every time. Another thing that helps is to go with an alternator, even if you are running 6v.
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