Of course all the interweb search will come up with no results but I`m taking that part number to a few dealerships to see if another might be found on the other side of BFE.
First stop is a Buick dealer as that P/N came back with more Buick results than anything.
It seems like such a simple circuit to make with ebay diodes, solder and wire but I want to retain that vintage green LED light, makes me happy.