UPDATE:
Randomly ran across a totaled BMW X3 at a car shop. I asked the guy what he wanted for both seats..... he said $40.
I said deal.....
He gave me the wiring diagrams, the seats, the harness up to the main loom (18” or so long), and the heated seat buttons. I gave him $60.... maybe should have given him more, but he was happy for the extra money.
In the pictures, the seats are all the way up (easier to get at the bolts) and just placed in the truck. Brackets look easy to make.
I have a video of the seat power working in the truck. How do I post that?
UPDATE: got more wiring diagrams. Added lumbar support controls diagrams.