I was going to change my engine wiring harness today with an M&H one and I ended up aborting the project as there seemed to be some additional plugs/wires on it. I pulled out the 1972 Duster wiring diagram and figured out what 2 of the wires were, but there is a plug in this harness that I can't figure out. It is the plug that you see on the middle of the photo, it is on the black wire that goes to the brake light warning switch plug, if you look at the bulkhead when mounted on the car it is...
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