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Moderated Ghost in the machine

 

I came out to my '87 Toy Dolphin to find the windshield wipers going! Spooky! I pulled the fuse, and they kept going! I had to disconnect the connector at the wiper motor. (If they didn't stop then, I would have run away very fast.) My guess is that some 35 year old piece of plastic broke that was keeping the park switch open, and it closed, which will run the wipers continuously, and since that switch is fed directly from the battery, pulling the fuse won't help. Now to Rock Auto for a Cardone reconditioned unit.
 

Hello Don B,

Regarding the park switch, which is in the wiper motor. No power in any shape or form should be present at the wiper motor with the ignition switch in the "off" position, provided that the ignition switch is not defective in some way.

The wiper motor is getting power from somewhere, some investigation will be required.

Aaron from CO
 

I discovered why. I had installed an intermittent wiper controller module, and it went bad. I pulled its fuse, and the problem stopped. Cancelled order for new motor. Mystery solved.
 

Aaron, yes, as I mentioned elsewhere, I had installed an intermittent wiper module, and it has a connection directly to the battery (via a fuse), and the solid state relay in it failed in the on state, and that was the problem. Sadly the company that made that module is no more, so I can't order a direct replacement, so it's back to the workbench (if I want to continue to have an intermittent wiper feature, which I do).
 

You might do some research, if I recall, if you buy the intermittent wiper switch and the intermittent wiper relay you can convert over to the factory system. I read about it somewhere. Probably only true if that was a option in that year.

From my OnePlus Phone
 

Aaron, I've already custom-built an intermittent wiper module that's worked fine for years, it's just that its time delay relay failed. I just need to source another TDR that'll do the job and replace the faulty one and I'm back in business.

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