new passenger door lock actuator karr

I think (but I'm not sure) Karr is a shop out of California, that has/had alarms badged with their name. I have a used Karr alarm, and to me, it looks exactly like Audiovox. If you just tapped into the small red and green wires coming out of the alarm brain...........well, hopefully if you just did it once or twice, the alarm's outputs didn't burn out. After you disconnected it, did the driver's door start working again? Hopefully so. Anyway, those outputs from the alarm are (most likely) low-current, and they're going to trigger a pair of relays somewhere in the car. Operate the one good doorlock back and forth, while listening. You should be able to hear the relays clicking, and figure out where the installer put them. From those relays, there should be a pair of heavier wires running into the driver's door. You should be able to tap yoru second actuator's wires into those wires going into the door, and be fine. Make a temporary connection at first, and see if your actuator is going up and down the right way. If it's backwards, just reverse the wires.