Door trigger?

I am wondering myself....Isn't a door pin usually ground switched?  Anybody?

Hey guys, here's some info about the Chevy pick-up:

• The BCM is located behind the drivers side of the dash.  The plugs on the BCM face towards the rear of the vehicle.
• Use tan for the drivers door located in pin B4 of the purple plug, and for the passenger door it will be a orange in pin B2 in the purple plug or dk.blue/white in pin B11 of the lt.blue plug, must diode isolate these wires.

That is why you must diode isolate each door from each other, otherwise you will get false readings in the circuit.

Hey Sparkyssb, not all door trigger systems are (-) ground. Ford uses a (+) system to engage the triggers so becareful when working on a FORD and also make sure you test with a DMM for circuit verification. Although we might think we know what we are taliking about in regards to wire colors..... not all vehicles that people own are STOCK ( meaning that if it had a previous owner.... who knows what they did to the electrical system ).

Jeff,

When I tested the tan wire it shows 12 volts when the door is open and shut.  I'm not sure why.  This is my problem.  But the blue/white wire for the passenger door shows ground when the passenger door is open.  I haven't wired the two together yet because the wire for the driver door doesn't seem to work.  I really appreciate your help.

That sounds very odd to me but if the door shows (+) when open & closed, you can use the (+) door trigger off the alarm and tie it into the driver door. You will still need to diode isolate each door trigger wire from each other so that they do not interfere with one another.