I am installing the main chassis harness in a 1972 Challenger and the car has rally gauges and a 3/variable wiper motor.

Question, can I change out the connectors on the main harness to use either the variable or standard 3-speed switch? Right now I have provisions for the variable switch but only have the standard switch and I can scavenge the connector from another harness.

Also, why does the variable switch have an un-terminated spade?

thanks,
Joe