Posted by 1957Ford600 on June 05, 2018 at 09:07:32 from (69.179.32.128):
I have a 57 Ford 600 that I converted to 12 volt years ago and it has worked great for years. I ordered a solenoid from a tractor supply but it is a four terminal rather than the old three terminal. The old one worked with the push button start which is a ground button but that no longer activates this solenoid. I know that some solenoids have a grounded base and others don't. Using an ohm meter, I have full continuity between the base and S terminal and the needle only goes half way between the base and I terminal. Also the needle goes half way between the S and I terminals. I've been told I need to run a positive lead to the S terminal and not use the I terminal at all. Is this accurate? That would mean replacing the push button which has a single terminal with one with two terminals. Rather than experiment and short things out, I would like to know if this is correct. If I don't use the I terminal, how do I run power to the coil? It may be easier to just find a coil with only three terminals, but I have four old tractors all wired differently and would like to understand how both a grounded base and non-grounded base solenoid should be wired. Thanks for your help. Russ
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