autostart 2350

Two questions, I have an autostart 2350 and 2 wires have been ripped from their connections.  One is an orange wire which I think connects to the brake switch to give 12 volts and the other is a small WHITE/ orange wire which says it is for a starter kill.  Does that mean that this wire can be grounded anywhere.  The reason I ask is that I can start my 03 Chevy Trailblazer with the autostart but I cannot lock the doors, and I can hear a relay click in the module.  The factory keyless entry will work no problem.  Also when I use the autostart remote to start the vehicle, I get a check engine light which gives me 3 codes....Any infor much appreciated!