Re: Electrical wiring for power seats question.
Anything that has to do with Airbag wiring, Leave It Alone! you don't want to tamper with that stuff or you may have a bigger problem on your hands. I ran an extra wire, with fuse, from the battery through the firewall and was able to use that for my new power seats, and train horn.
Besides, the only time that airbag wire, typically yellow, will get power is in an accident when the bags need to deploy.
Hope that helps,
2000 White 2WD Ford Ranger, White Tonneau Cover
Replaced Headunit with an Alpine Stereo and Alpine 5X7's in front and 6X9's in back, 00' Explorer Leather Seats to Automatic. Black Headlight Covers, Black Headliner, Blk/Gry OHC, going energy efficient with LED's and HID's, got sound proofing foam @ a local manufacturer and insulated everything (no sound or road noise)