pontiac g5 door lock wires

I'm hoping some one here can help me with the install of a gsm (pager/text) alarm. My car is a 2007 pontiac g5 gt. What I need is a - or + signal from my car's door locks when they are opened and closed. My alarm will be working in conjunction with the OEM alarm and key fob. I have a compustar pager alarm installed right now but I am looking to replace it with a pager/texting alarm that requires a signal to arm and disarm. The compustar alarm signals the doors to lock and unlock through a single wire.. using a resistor... what I need is a signal that will tell my new alarm to arm and disarm when I use my oem keyfob. I'm thinking I might have to remove the door panels and have a look there to see if I can use anything there.. but I thought I'd ask you guys for any input. Thanxs, Corey

Power Unlock WHITE (-) AT BCM MODULE IN FRONT OF CENTER CONSOLE ON PASSENGER SIDE            PowerLock WHITE (-) AT BCM MODULE IN FRONT OF CENTER CONSOLE ON PASSENGER SIDE            Driver Mtr Unlock TAN     (REV)     AT MOTOR IN DOOR      Driver Mtr Lock     GRAY     (REV)     AT MOTOR IN DOOR                 Pas Mtr Unlock     TAN     (REV)     AT MOTOR IN DOOR                 Pas Mtr Lock     GRAY     (REV)     AT MOTOR IN DOOR