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Door Open light/horn gremlin

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Old Sep 5, 2016 | 09:34 AM
  #1  
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Default Door Open light/horn gremlin

Hello, all!
Though the doors and trunk are definitely closed, the interior lights and door open horn go off intermittently while I'm driving around. I suspect it's related to the trunk, as it seems to happen more at higher speeds where the aerodynamics would tend to pull up on the trunk. But it could be a door too. One thing is for sure, its very annoying.
Any experiences with this or ideas on how to fix it?






Hugs,
Mario
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Old Sep 5, 2016 | 10:13 AM
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Hi Mario:
First off, thanks for the hugs. Everyone needs a good hug, once in a while.
You could check inside your door hinge rubber boot. It could possibly be a frayed wire, after all the years of opening and closing. If your hatchback closes firmly, I doubt it is that, but stranger things have happened, with these cars.
Good luck
Don
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Old Sep 5, 2016 | 11:09 AM
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What horn are we talking about here? do you mean the chime unit in the console or the alarm horn?

Neither should go off while driving due to the doors/hatch being open, The hood has nothing to do with triggering interior cabin lights - so it is not that anyway.

Please go into more detail on what happens and for how long...

Alan
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Old Sep 5, 2016 | 01:40 PM
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Thanks, guys.
A little more detail. I called it a horn, but it's more of a buzzer I suppose (from under the dash somewhere). It's the annoying 1980 version of today's door chime that sounds when a car door opens.
So, I'll be driving along and it comes on intermittently, sometimes for a split second (seems to coincide with bumps in the road) and sometimes for multiple minutes on end. Along with the buzzer sound, the overhead interior lights and the door foot lights come on. These all come on when I open the door or trunk, as designed, but now they're coming on when I'm driving and the doors are all shut (supposedly shut).
I suspect the trunk because the trunk would pop open, failing to latch though I turned the key to the locked position. This would lead me to believe it's a latch issue, but I did get it to finally latch after multiple tries and the same buzzer/interior lights issue would resurface.
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Old Sep 5, 2016 | 02:35 PM
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Originally Posted by Donald Smith
Hi Mario:
First off, thanks for the hugs. Everyone needs a good hug, once in a while.
You could check inside your door hinge rubber boot. It could possibly be a frayed wire, after all the years of opening and closing. If your hatchback closes firmly, I doubt it is that, but stranger things have happened, with these cars.
Good luck
Don
Nope the pin switch is in the door jamb the wire does NOT go into the hinge rubber boot harnes except for the red warning light illumination but that is not the ground wire for the interior lights door ajar. More likely is the wire to a pin switch is loose and grounding or the rear hatch pin switch is not being held off by a loose receiver....you can unplug the hatch switch Brown wire (ground) and brown with white dash(switched ground) to see if it is the hatch....
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Old Sep 5, 2016 | 03:22 PM
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I'll give this a try when I get home this weekend. I'll post a follow up and let ya'll know what I find. Thanks a lot!


Mario
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Old Sep 7, 2016 | 04:18 AM
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Had the same issue on my '89. As James said, in my case it was an intermittent short near the pin switch for the driver's door in the jamb that gets depressed when the door is closed. Easy fix.
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