Update: My headlights are working, but the right side of my dash is still dark. Definitely not the fuse as removing R&Ring it has ALL lights going out, then the right side coming back, as expected. I can see *most* of the speedo, then nothing to the right, other than the radio.
New development: Ocassionaly, the left side lights will go back out too... then spontaneously come back on.
The dimmer switch is "new", as in a non-OEM part from some other company. I haven't tried a new headlight switch.
All gauges work perfectly. This is only the lighting circuit.
I've been doing my best to follow the wiring schematics. Following the "light feed" (E2-18 0), I see it meets up at a connection to:
Fuse box (E2D-18 0): already ruled out
Panel lamp dimmer switch (E1-18T): replaced by new, repro switch. Power = E1-18T -> fuse box -> E2D-18 0
The radio?? (E2F-18 0): radio lights up
Ash tray "ash receiver lamp (feed)" (E26-18 0 at junction, but listed as E2C-18 0 right after): I do not believe this light works. I can check, if it matters.
Tachometer (E2-18 0): lights up fine.
Two "instrument lamps" (E2A-18 0 and E2B-18 0): not sure, as I'm not sure which instruments they are talking about.
Other accessories that are connected to the dimmer switch:
Door switch: both functioning.
Dome lap: all interior lights come on and powered.
Headlamp switch: headlights/parking lights all come on
"lamp on" buzzer: functioning properly.
Do I just follow the power wire from the circuit board until I find a problem? Do I now have TWO problems since the left side is also losing power for the lights, intermittently?
As I've said many times: I am NOT good with electrical stuff LOL. Thanks, in advance. Any help is appreciated. Also, my offer still stands to pay an agreed-on amount to the first person that helps me solve this problem. Not a single person in my town works on classic cars. It's the weirdest thing. I just want to get it working again.