Mine were, I was looking at some alternative lighting but decided to hold off, then the headlights cut off and came back on one night. I knew the switches have a circuit breaker in them so I replaced the switch. Wow, BIG difference. It never occurred to me that there are contacts in these old switches and they were dirty. Working on new computer controlled stuff everyday I tend to forget how the old stuff worked.

I took the old switch apart and the contacts were very dark. Just thought I'd pass that on to you all.