I have a simple Black Widow one way 2800 series car alarm that has worked for over 20 years and now the two doors are not arming. The alarm no longer resets it's self I must reset it with the key fob. Once I reset it everything seems fine such as the led flashes, the shock sensors chirp when they should and when I open the trunk the alarm goes off as it should. This is a two door car and neither of the doors when opened will activate the alarm? Also my windshield wipers will not park and will not turn off unless I pull the fuse. I replaced the wiper motor and have tried two different dash switches plus the original and none have made a difference as the wipers still will not turn off and go to the parked position. This all seemed to have happen when I pulled the stereo from the dash as the equalizer stopped working. Could this be a ground issue? What should I test. I do have DVM and some experience testing continuity, voltage etc. I enclosed pictures of the circuits. Thanks
What I've found so far is that when the module and the wires going directly into it are moved around ever so slightly the door triggers will arm as they should. Example- I set the alarm then open the door, the alarm should have went off but didn't so I then move the module around ever so slightly then the alarm goes off. That's were I left off. I will spend time on this latter today.
I started in the engine bay and cleaned a few grounds then tested them I got 0.0 Ohms on three of them and 0.1ohms on the patch cable I installed for the additional ground of the wiper circuit which didn't make any difference to the wiper trouble.
That's the only grounds that I could find on the left side engine bay.
What I've found so far is that when the module and the wires going directly into it are moved around ever so slightly the door triggers will arm as they should. Example- I set the alarm then open the door, the alarm should have went off but didn't so I then move the module around ever so slightly then the alarm goes off. That's were I left off. I will spend time on this latter today.
I started in the engine bay and cleaned a few grounds then tested them I got 0.0 Ohms on three of them and 0.1ohms on the patch cable I installed for the additional ground of the wiper circuit which didn't make any difference to the wiper trouble.
That's the only grounds that I could find on the left side engine bay.
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