I'm Kent from Grove City, Ohio, USA.
My wife & I have been into G scale trains for about 20 years (multiple houses = multiple layouts)
I am currently wanting to convert a Bachmann Spectrum 20.3 Climax engine to battery power Railpro. (After that I will be converting a Spectrum 20.3 two-truck Shay).
I bought a Railpro RPO LM-4S-G locomotive module as the control module.
When I dropped the ashpan, I found I was looking at a Bachmann G811x-PCB02 board and came to a complete stop. I assume I need some/all of the resistors on this board, so I didn't start cutting wires. There is also a second PCB in the bunker which is for a soundboard.
I need some guidance on how to proceed so I don't cause damage.
Experience level is moderate, but I'm not good at reading PCBs.
Video is a couple years old...and prior to the Shay