Quote Originally Posted by caver View Post
GOT IT... I thought it was ONE pin...Really two small ones going in from each side. I got a Welch Allen 21 watt bulb that WA told me would work. DR tells me they used a WA ballast and if WA says it will work, it should.

. THANKS
The 21W bulb will work, but the ballast is only 18W, and you will still have an 18W light.