VSS is new, gear in perfect condition, machined gear inside tailshaft perfect also. I removed tailshaft housing to verify condition of same. I replaced the original vss because it had been bumped accidently and was broken. I have already checked the condition of the wiring harness at that location and found it to be fine. I have been led to believe that the wiring goes from there to the ecm behind the passenger side kick panel. This I do not know for certain, if someone can verify this to be accurate and true, please tell me. I have no desire to tear the dash apart (cluster) if its not necessary. I live in a remote area of the country and can get very little help with anything pertaining to the SC. This is my second 90 SC, bought the first one brand new and have had to educate myself on practically everything . The replies have been helpful, but I still need more info if possible.