I recall a discussion regarding an available replacement bulb for our Barths' rooftop spot/flood light. I purchased, as a back-up, a bulb that is the exact bulb for my '92 Breakaway. It has two filaments - one for the flood function and one for spot. And the dimensions are identical. For those of you interested this is the site. (Cost around $30)
https://www.replacementlightbulbs.com/lamp4700.html
Take care.

Good deal , thanks for posting

It has been some time since this discussion but are you sure that is a Roof "Light Bulb" or is it actually a "darksucker?"

discussion here: https://www.barthmobile.com/eve...681049713#1681049713

Perhaps a review of THE ELECTRICAL THEORY OF SMOKE by Joe Lucas?

here: https://www.barthmobile.com/eve...603973177#8603973177

I do miss the wisdom of bill h.