Ok have put this repair off long enough. So today I started. It is a Gottlieb Big House. Some idiot cut through the wiring looms from both the head to cabinet and also all from the Playfield. To make it worse they threw the loom with ALL the backbox plugs away.
Now most would part this machine out, but the rest of it like Playfield, cabinet and backglass are in good condition. So too good IMO to just part out. So the rewire has finally begun. Wish me luck and I will keep you posted.