OK, so I'm installing a remote start in my 05 2.5i, and I've found everything on the BIU 35-pin plug as described below, except the Arm wire--pin 3 should be Brown, but pin 3 is RED in my car.
The other wires on the plug are as advertised...I tested the lock/unlock and trunk release. Internet search turned up several independent sources that also say pin 3 <<should>> be Brown. The "vacation pix" weren't any help in tracking down the alarm functionality. Any ideas on how to test this wire to see if it's the right one?
Factory Alarm Arm (-) brown (BIU, 35 pin plug, pin 3)
Factory Alarm Disarm (-) yellow/red (BIU, 35 pin plug, pin 12)
Power Lock (-) brown/white (BIU, 35 pin plug, pin 15)
Power Unlock (-) brown/black (BIU, 35 pin plug, pin 29)
Trunk Release (5-wire) white/black (BIU, 35 pin plug, pin 22)