2003 grand am door locks

Well first i'm going to run under the impression that the system you're installing provides a negative lock/unlock out put.  So here it goes.

Relay 1:  85 goes to the lock output of the system.  86 goes to constant +12volts.  87 goes to ground.  and pin 30 goes to the wire in the car.

relay 2:  85 goes to the unlock output of the system.  86 goes to constant +12volts.  87 goes to ground.  finally 30  is where you want to solder the resistor inline.  Take a short wire hook to the pin of the relay.  Then solder one side of the resistor to that wire.  Next take another piece of wire and solder it to the other side of the resistor.  Finally hook that wire up to the wire in the car.