Quote:
Originally Posted by windshieldwiper
I just used an actuator on my driver door. No relays. Actuators only cost 10 bucks on ebay. Just two wires. My passenger door is vacuum controlled. dont remember how that works. unlocking/locking passenger door locks driver door but locking/unlocking driver door does nothing to passenger door. I guess I didnt do it right.
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Some alarm brains have built in relays, but if yours doesn't you really shouldnt be putting the power to the actuator through the brain. Better to err on the safe side, a relay is only a dollar or two. And if you have an S-chassis, it's not vacuum locks, its central locking, meaning there is an electrical switch on the locking mechanism on the driver's side door that activates an electrical actuator on the passenger side door.
By the way, I had an S13 that was the same way, with the passenger side door acting as the master door. I assumed whoever did the alarm install on that car just really messed it up.