Hi,
Since it comes back, it isn't a fuse issue. Power is there all the time, but not being used. I looked through a wiring schematic and have attached two pics below. The instrument panel and air bag tie into the same ground, which includes a ground for the wiper. Do me a favor. I need you to check that ground. It is located in the center of the dash and mounted on a bracket. One wire to it will be black with a light green stripe and the other will be black. See attached pics.
What you are looking for is to see if it is loose, corroded, damaged, or anything out of the ordinary that could cause an issue.
Here is a link you may find helpful:
https://www.2carpros.com/articles/how-to-check-wiring
Let me know what you find or if you have other questions.
Take care,
Joe
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Saturday, March 28th, 2020 AT 9:26 PM