Reply to "cooling fan relays"

jfb05177Member

steve, I don't grasp the exact details of what is going on.

to begin to answer your question, the original 3 wire relays have an internal connection for the coil current to the contact current. where a "standard" 4 wire relay has the two coil terminals and the two contact terminals. thus to use a 4 wire relay in a 3 wire circuit, a jumper is need to make an external connection

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