After a fire.....

I recently replaced my headlight and ignition switches with Standard Motor Products, less than $15 each from Rockauto...

Are your wipers single speed? If so, I may have a switch for you.

If it were my car, I'd do a complete rewire at this point. My guess is 50 year old worn and brittle insulation was the cause. I've had plenty of electrical issues due to old wiring, luckily I've never had a fire.