I want to add to check fuses because they can look good and not make good contact all the time .
I cannot believe that I have had some items not working all the time and 90 % of the time It was the fuse or the fuse holder .

Clean fuse holder and put in new fuses.
I did replace the window switches at first and found they worked for a while and then had a problem and went back to the fuse etc.
Anyhow the new window switches looked nice because the little white decals that are on them were worn and 21 years old . My 2 cents

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A couple of Ford pickups F 150,250, 350 missed.
1983 240 D 256,000 miles ,auto, ac.