EA Fairmont Ghia Series 1.
Changed nothing, did nothing, touched nothing, but ..............
Sunday night locked the car with the alarm, all good.
Monday morning, unlocked car with alarm, doors opened all good.
On way to work, press button down to lock doors bounced down and back up, tried again, did same thing again.
Get to work park car, press alarm button, bounce down and back up, but at least alarm is armed.
Get screwdriver and some tools from desk, go back to car pull apart front doors and can't find problem, get car locked manually after disconnect of door actuators, and alarm car, leave it for the day.
Go home pull apart all doors, disconnect alarm from door control, disconnect and check everything doors still refuse to lock, they bounce up and down.
Currently doors are all disconnected at actuator, and I lock/unlock the car maunally, and arm the alarm at least.
Conclusion is that I think the feed wire for the door unlock is earthed out somewhere so always negative so it feels the doors should be open at all times, am I right to assume that only one wire at a time should carry a negative signal to tell the doors to be locked or unlocked ??
Any questions, suggestions, or fixes welcome.