Just to check, you are not getting voltage on the top switch?
So you have pulled it down and moved the switch and confirmed you are not getting voltage in either direction?
Here are a couple guides that help with this:
https://www.2carpros.com/articles/how-to-check-wiring
https://www.2carpros.com/articles/how-to-use-a-voltmeter
If this vehicle was sitting has been sitting outside then we need to suspect there is corrosion in some of the connections so we need to actually check to find out what voltage is at the switch when you are pressing it because you may have partial voltage which would indicate a corrosion issue.
Please see the wiring diagram below as well which will help with this.
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Monday, September 20th, 2021 AT 5:03 PM