Edit: SOLVED. This is the factory DMD power supply wire - connects one end at central molex, other end to factory DMD. I am using a colordmd and apparently removed it since it wasn't needed.
Special, right?
Not a trick question. Working on my Metallica, pulled the playfield to clean up wiring, do cable management, ensure a few mods were secure.
I've got the Rock custom undercab and backbox lighting, but only have flashers working. Unsure what I left disconnected. Also has lighted flipper buttons, magnetic lit hinges, speaker lights.
I removed the florescent transformer and bulb sockets.
Thought I took a photo of everything in extra detail... Somehow this is not in my photos. Special, right? Self critiquing and cringe worthy. Sorry for the photo on my old shop stool...