Bally -43 style AUX lamp board adapters.  These work in your Bally games that use a -43 style (Single output connector).  

This set ONLY adapts the auxiliary lamp driver board,  not the main lamp driver board.  Both this set and the Classic Bally/Stern LED adapter set, part number MB-07-011 are needed to convert a full game.

For use with Kiss, Future Spa, Centaur, Centaur II.