AndyDG6

I am, perhaps more than a little foolishly, in the process of replacing the interior of my 1999 3.0 SE for a full leather one from a 2004 model. I have now hit a problem with the front seats wiring The concern is the seats airbags. The old seats only had a red and a black wire and the new ones have several. Has anyne done this and if so tell me which colour wires to connect up.

I am wanting to fit parking sensors front and back to my 1999 3.0 V6. Has anyone done this and what route did you use through the bulkhead?