I Have found the Problem, with the help of a Partsguy at Napa, on Wells Road in Jacksonville, FL. My Motorhome is a 1992 Bounder 35J
diesil pusher. I needed to find a headlight switch, nobody had one and Oshkosh quit making them and went to a new design. The new design required an adaptor to work. The new switch was about $50.00
and the adaptor $450.00. Also, there was a 3 month wait for the adaptor. Napa found an Identical twin of my old switch for $25.00.
I plugged it in and wahlaa it works!!!!!! A savings of about $475.00
and no 3 month wait. The Napa part # is ECH HL6630 switch/commutateur Interruptor. Hope this helps some other poor soul looking for that discontinued part.