Re: 3 speed overdrive with an HEI distributor
You're welcome!
I looked at a number of different relays, but I think the one we finally ended up using was a Standard Motor Products RY-12.
It is a common 5-terminal relay with both N.C. (normally closed) and N.O. (normally open) contacts inside a metal case with a built-in mounting tab. However, the terminal numbering isn't the same as a typical plastic case automotive relay. This one has terminal #1 as the common contact, #2 is the N.C. contact, #3 is the N.O. contact, and #4 & #5 are the coil. It has 1/4" wide blade terminals that will accept Packard/Delphi 56-series connectors for a factory installed look, or can be used with generic 1/4" quick connect terminals.
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