Recently I had a headlight switch fail.  Some of you know the symptom
... no headlights unless you hold the dimmer stalk back and then you
only have brights.

I replaced the switch with a spare but decided to open up the bad one in
that I had nothing to lose (it didn't work).  It's full of fiddly bits
such as unsecured contact plates, springs, and a roller ball for switch
positioning.  Anyway, after I cleaned and burnished the contacts and
reassembled it, it's working normally again.

Now I'll know what to do if I'm ever in that "Lights out" situation again.

Mike
Houlton, Maine