39 Chevy.......Some added info/corrections:
-The 12V power connection is indeed 30 Amp, not the lower rating that I had given B/4. All diagrams that I have show a 30 amp circuit breaker supporting BOTH seats, combined.
-Attached is a PDF file wiring diagram for a '97 Eldorado. I believe that you'll find (as I did), that very few changes have occurred through the years, following yours. If your seats have heat, & lumbar support built-in, you'll need the Cadillac console mounted control module, & wiring harness, too, as these controls were NOT mounted on the seats in the early to mid 90's. (Attachment
[A red 12V is shown; same as your orange 12V wire.]