Mr. Steve,
Have you looked at the power supply?
A fuse might be bad.
Or  switch.
Or a broke wire in door loom.
Have you look at these things?

Good Evening

Fred

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Subject: Power Mirrors don't work
I have a 89 westy. The mirrors worked at one time, now they don't. Any
ideas what it could be? Both the driver and passanger side mirrors.
Steve