Thanks for that. Those LEDs are definitely an issue, and then there's the lack of resistors (which I'm guessing were probably integral). The original LEDs likely do not exist any longer, and the "height" is problematic.
If anyone can provide approximate dimensions on the LEDs, it'd be a start. Thanks!
Look closer at Matt's PIC. There is 1 hot wire and 2 Grounds for switching, Also there are 2 LED's in each module wired in series. If using 5Vdc a resistor may not be needed.
Chris