I'm in the process of restoring a Fish Tales pinball machine. I noticed some wiring harness grounding hackery. There is a wire that has been run from one of the ball trough switches all the way to the harness and then spliced into a to a ground point on the cabinet where the plumb bob is.
From what I can tell His green wire splices into the green / purple striped wire off the main harness.
I would love some help on this. Can I remove this hackery?? I'm concerned it a hack to solve some larger problem that was not solved correctly.