Stop in for a cup of coffee

Keith none of the wires are even in the right connector holes, great example yesterday did the temp sender right the one from the car went into lets say k slot, the doner went into k slot and the fsm had it in another slot. :soapbox:
You are saying the two harnesses matched. That makes sense, cause there are definitely errors in the FSM. Supports what I am suggesting that you should be able to use the donor harness and should be 99% plug n play. You just might have extra plugs that don't get to play. :D But on SE I would expect almost everything to be used, unless you eliminated or changed something in the swap.