So working on a DE BTTF had an issue and it appears the GI relay is doing the opposite of what it's supposed to do. Meaning, it's dark when it's supposed to be light and vice versa. So the game is dark most of the time and only lights when it would otherwise turn the GI off. Swapped out a DE PS (With bad High Voltage and hacks) with WMS PS of the same era and noticed this issue now. If you remove the connector on the PS (Two wires) for the Relay, the lights stay on all the time. There was several hacks on the GI lights on this but I wired things properly back and noticed this issue. Any ideas would be appreciated! Does this GI circuit run through PPB board - that's also been bypassed with said hacks.