I think he might be looking for the switch on the dash that just turns on the light above the instruments. They are rare and pricy where the steering box switch uses common available parts. I have used a common hardwear switch and put a repo knob on it. I will look to see if I have a ginnie switch in my stash.
It has been asked already in one form or another, but please humor us and tell us which light switch. The headlamp/tail lamp switch or the dash light switch? (I recognize that early four-cylinder '32s did not have a separate dash light switch.)