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Last time I was wedged under my driver's side dashboard (looking into headlight switch wiring gremlins) I noticed a 12-pin plug that was just hanging there next to the steering column, not plugged into anything. The connecting wires merge into the big trunk of wires that go off towards the fuse box.
Does anyone know what in the world is this supposed to plug in to?
It's not for the door ,could be for the passenger seat if yours is manual or for something else currently not in use in your car. I have the same connector hanging in the same place and all my electrics work , it's probably for something the car is not equipped with. There is a unused socket like that all the way back in the corner under the fuse box ,maybe that's where it connects when used.
I would agree with Rudy. I just looked in my car because I have the dash off and mine is normally unplugged as well. I do not have power door locks or alarm.