Way back when I replaced mine, I found an exact replacement at www.thinlite.com/?. They were makers of the original. When it was replaced, I discovered that was unnecessary. It seems that I had replaced bulbs with defective ones and assumed the fixture was bad(DUUHH). It was another time that my stupidity gave me another spare. By the way, Steve, we are almost neighbors.
1998 Bounder 36s F53 460 V8 Banks power & Honda Accord toad