Quoted from Pinball_Nate:I know the wires for each individual lamp are corresponding to the lamp numbers on the boards............BUT what are the "lamp bus" j1, j2, j3 areas connecting to??? I'm thinking this may be more complicated than I can handle........it looks like I am running something from the lamp board down to these areas?
Lamp bus would be the bare wire that connects to the metal frame of the original parts.
It looks like the boards allow you to solder the wires directly to the board, or install connectors so it's easily removable. You would need to have the headers, housings, and pins to do that though.
In the first pic for example, you would put that top group of three wires into a 3 pin connector, and plug it in to pins at J1.