I have a 691-pcb1-0b1 board set and wiring I want to put in my lionel convention sd60. Most of the main wires were labeled and the boards work fine. There’s no less than 6 toggle switches and 2 little full wave bridge rectifiers in the wiring and I can’t figure out what those do. I did trace the run/prog switch and rs/ss switch successfully. The others look like ac polarity related but not sure. I have space for 3 total in the chassis already. I figured run/prog, smoke and ? For the 3rd. Hoping I can bypass the others.
It looks like 3 switches would allow operation on dc track power right to the motors bypassing the board completely. Is this a real thing?
