Hi all, been looking through some of the posts regarding the alarm systems on the Class 1 W126 (specifically, 1985 CA edition diesel). Mine will randomly go off when the car is locked. I can't seem to find a timing and/or trigger. I've had it go off in the middle of the night and I've had it go off about 15 minutes after locking it.



To the best of my knowledge, the only thing to be modified is my disconnecting the ground connection when I installed my Blaupunkt radio. I tucked the alarm ground/trigger wire up and away so as to not find any ground points.



Where should I start looking for issues? I've read a few threads about micro switches in the door locks, is that a common start point? Thanks.