67 headlight switch

while driving my Dart in Florida the dash light went out. The reostat has always been tricky to get the dash lights to work, they were either on or off, not really dimmable. It had been that way from day one of buying the car.

I should have replaced it when I rebuilt the car, but didn't think about it.

Is there an aftermarket switch available or do I have to get another 45 year old switch and hope for the best, does it have to come from a 67?

it did this 2 years ago right at the end of the summer and the next time I drove it at night they worked. Had to move the car tonight and turned the lights on and nothing, so before summer I need to repair it.

if someone would have the part # maybe I could find a NOS at the Chrysler swap meet in March