I got this done and it ended up being a pretty fun, rewarding, project. Figured I would share here.
Long story- short version:
I picked up a nice used Addams Family PF from a user who had done a swap. For a while I had been planning on turning it into wall art. So I also got a pile of wood to make a frame for it.
I built a shadow box frame with the playfield recessed 2 inches. Ended up clearing that and the playfield and picked up a couple meanwell DC powersupplies of the 5V variety (adjustable) and got a bunch of light sockets (EM bayonet style) and wired up two strings- a GI and a insert. Color matched LEDs and threw switches onto side of the frame and ran a cord and its done.
I did not take pics with the intent of documenting this build but I have enough to share some progress and final.
Here is the playfield after light cleaning- with me having played with the old plastic parts I got along with it. Just toying with how I might put it “back together” for a display. One goal was not to damage the playfield. That succeeded and this could be put into a game again zero issues.