The part came in today, and it was precisely what I needed to make that transformer work. I know I've thanked you a hundred times already, but thanks again, Alky!
While at first it appeared that the game wasn't going to work, I've been squashing the bugs in it, and is actually playable now. There was so much that had to be replaced and fixed on this machine, and being very noobish on pin repair, I can hardly believe that I manged to get it all done without any screw-ups.
I have to replace one row of stand-up targets (behind the T-W-I inserts) and one light board (under the T-E-R inserts) that had been scavenged from the machine, and she will finally be complete -- as far as parts go.
Other than that, the biggest problem is that the playfield disc won't spin, nor hold any balls.