I'm intalling the profec A, and need to know whether the red wire going to the profec head unit is a switch power source (with ignition) or a constant power?
I wired it to a constant source, but the actuator started clicking even though the key was off... But wouldn't a switched power source loose its settings?
Yes, it MUST be on a switched power so it only comes on when the car is on. Otherwise the actuator will click all the time until your battery dies. FYI the Profec A actuator will always be clicking when the head unit is on, something about the design makes it always click.