I fixed a couple of little electrical gremlins of longstanding in my wife's car this morning
The driver's side master window switch would not roll the passenger side front window down, but it would roll it up, so I took the trim panel off and removed the switch array and opened it up, which is tricky because the thing is held together by six 20 year-old plastic tabs, three on either side which have to be pried up at the same time to get it to open up without breaking anything. So I pried up each plastic tab and stuck a toothpick in to keep it open and finally got the thing apart. I squirted some Cramolin on the switch contacts and put it all back together and now it works great
The other thing I did was to get the non-functioning hatch release button out of the dash, take it apart and clean the contacts, which also works now.