ok, so after I finished installing gauges in my truck the power windows just stopped working. I checked 20 amp fuse for the power windows and it is fine. Also, I am using the fuse panel to power my gauges and they work fine. I'm stumped on trying to figure this out.

 

I looked at my manuals. It said that in the fuze box, look at the two 30-amp breakers in positions 12 and 14. Then on "some models," there was a power window relay in the power point box under the hood. Can't tell for sure... as I have a manual just for my motor and then a chassis manual I have is 1980-1997 f250 and 350... but for the gas modeled trucks.

When mine went, it was the switch connectors that needed cleaning in the drivers door. always seemed to be at the drivers door for me, even when the passenger door window stopped working... But you "said" you had done some tapping into connectors at the fuse box, so I would look there first. Then pull the switches at the drivers door and see if you have power there. When I have problems like that, I use a toner. Then I check to see where the signal goes and stops.