2000 mustang issue

So I'm in the middle of installing an alarm / remote start in my 2000 mustang gt. The product I'm using is a Autopage RS-1000. For the bypass, I'm using a DEI 555p. The wire schematic for the bypass has me a little confused. The schematic says to cut the ignition wire and put #8 on the key side, and #9 on the car side (or vice versa I'm not sure if it's #8 key side or #9). Anyways, my question is, which wire would I utilize in the steering column being that I have more than one ignition wire?

Here's the instructions. I think you may be right when you say it might be a wire in the 4 pin pats plug. The instructions say it's typically a black / white or blue wire, and one of the wire in the harness is black / white. I'm gonna go check...

this is wat i found for ingnitions wires and locations     IGNITION 1 RED / LIGHT GREEN (+)      IGNITION SWITCH HARNESS IGNITION 2      RED / BLACK (+)      IGNITION SWITCH HARNESS jc hdez

I got it figured out. It was a wire in the PATS plug right next to the rx and tx wire.