No Hi Beam on Passenger side
1966 chevelle, Replaced all four headlights 2 years ago, Never drove at night much, First dimmer switch didn't work, replaced it, (got a bad one) replaced it again, it worked, but later on I noticed my head lights on bright would blink on and off. Since then when I go to bright, driver side lights up both, passenger side none, switch bad to dim, both sides work on dim.
I cleaned the passenger side ground, bright bulb doesn't look blown.
I turned on lights, on bright and probed all the terminals with test light that didn't work, no voltage.
I suspect the dimmer switch, how do I test it?
Or is there another problem?