I've been having some intermittent problems with my starter/reverse switch sticking and keeping my headlights off. Last night I had occasion to put on my four way flashers and had a very difficult time getting them to turn off. I'm guessing that it's just years of built up dirt and crud so I'm looking for something to use to clean them out. I seem to recall an aerosol cleaner used for audio knobs and such years ago but don't seem to be able to find it now. Does anyone know of something I can use that won't damage any electrical/electronic connections? Thanks.