window sensor

I am trying to install a gs-100 window sensor on a gmc envoy 2004 the senor has 3 wires: red for 12vdc- black for ground and blue for neg. do anyone know the 3 color wires i need to connect to on the gmc envoy driver door i have already remove the panel and there is a 24 pin connector for the window and the connect has a orange,gray and black,green,dark blue,light blue,brown and two grays. can someone help. Thanks Andrew

andrew

Whats a window sensor and what does it do?

You connect it to the aftermarket car alarm trigger wire. Blue to the trigger wire if you have more than on sensor connected to the alarms trigger wire you diode isolate each sensor with the band towards the alarm module, red to fused +12v, black to ground.

Thanks for the info i can connect the red and black. but i do not have an aftermarket alarm my alarm came with the envoy. so were do i connect the blue wire to. thanksandrew

The sensor is meant to be an add-on to aftermarket alarm modules that have a connection for sensors. Factory alarms aren't designed to be upgraded with additional sensors. That's why you'll see threads on this forum of people installing an aftermarket security system (with extra sensors) to a vehicle that is already equipped with a factory alarm.

You could try to connect to one of the door triggers on the factory alarm but that's opening a technical can of worms and Catback explains the reasons why not much better, see above.