95 Explorer Door Triggers

The diagrams that you can get here and from alarm companies are incorrect for my Explorer. Don't know if it's because it is a limited or not? The charts say the door trigger should be the BLACK/ blue wire. That is the courtesy lamp circuit. There are four seperate door trigger wires that go into the GEM module. Then one wire goes to the RAP(factory alarm). Think I found the one wire but it doesn't seem to switch polarity or do much. Light blue/white wire. I know I could tap all four door trigger wires but I'm wondering if there is an easier way?

Thanks!