1999 Grand Am GT Door trigger help?

Door Trigger            -       Notes: The lt. GREEN/ black is located in the drivers kick and catches only the drivers door. The lt. blue is located in the harness coming from the drivers running board going under the drivers seat and it catches all other doors. Use both door trigger wires and diode isolate each. On the 2 door the lt.blue is in the passenger kick.I'm having trouble locating these because as soon as i open the door, the alarm does NOT go off... how do I test these wires using a multimeter? and also, does it matter which wire is connected first (driver vs other doors) to the input for the brain?I installed the RS2011, and everything works, just this lil thing doesn't.

oh, and also, which way should the diode be faced? and what's the easiest way to to place a diode inline?

Have the cathode facing away from the alarm towards the target door trigger wire. I did a y connection on my bonneville with the same issue.  No it does not matter which wire you connect first. When testing which ever wire that you have connected with the door/doors pertainning to that wire is what will work. You should see 12volts when testing this wire on/off.Sound Pressure

You know you have the right amount of pressure when your eyes start to water! Now you've got Juice!