anyone install an alarm in an 03 focus SE

I just got a 2003 Ford Focus SE 4door sedan. I have a Viper 790 that is half installed. The remote start part is working fine. Now, I can't figure out the door trigger and door locks. I have all the wire colors and such but I can't figure them out. I know the door trigger is black w/ blue and it's low in the drivers kick, and at pin 13 on the harness. But there are 4 blk/blu wires down there. They all appear to be door tirggers, but they show +1 volt when the door is open. It isn't enough to trigger the alarm, and it's positive. Also on the door locks, I have been told that I can just wire the lock and unlock wires right to the keyless module behind the glove box, is this possible? i am assuming these are triggers for the factory relays so the current draw wont be an issue? And I guess the module doesn't go to sleep. Has anyone on here installed an alarm in an 03 focus? That can help?

the lock and unlock is possible to do.  first make sure that you have a good ground on your meter, if you do and you still cant find it you will have to diode isolate each door pin