I have my dads 1983 monte, restoring, after market alarm system installed by previous owner, system is bad, removed and restored the wiring back to OEM, problem is in the door lock relay, repaired wiring so relay is activating, but the feed wires going to door locks are dead, have a gray, orange/black and a tan or a light brown wire, bought a Chilton book and relay is not listed in the book, need to know where power is coming into the relay which believe is orange black, but where is it coming from? any help would be great