Switching Alarms from factory to aftermarket, but using factory harness?

[Ces]

Hi, I currently have a factory alarm on my ford explorer - 94' xlt. What I'm wondering is if anyone had any info on the wiring that went to the alarms. The box says 'pursuit' but I couldnt find any info at their website, and the circuit board and box doesnt have any model #'s. Anyone ever find out what each pin does? It would make my install time for my new alarm a 15 minute job instead of a 6 hour dilemma. Thanks...