[RTM]

Thanks, that's exactly what I'll need to complete the lamp install.  I'll DL it for future reference.

In the meantime, this (secondary?) transformer (only two output taps, number 4231J stamped on the bottom) appears to have eaten itself.
It's not dead shorted yet.  It's had less than five seconds of current applied to it since I discovered its new "fault". It worked fine before. Next, I tried a 
"nothing to lose" last-ditch option of applying Wood Glue to it and letting run down into the paper hoping it might insulate the windings, but I was aware
it had less than a 10% chance of working and ultimately it didn't.  It quieted the arcing, but effectively it's closing the metaphorical barn door after the racing thoroughbred "Magic Smoke" escapes.  I'm looking for one of those transformers now.  If someone has one available that they're willing to part with (or better yet, if they know of a modern equivalent-it appears to me to be fairly straightforward, I just don't know the specs for it) I could really use some help.

Thanks again, and best to everyone...