PAZON SURE-FIRE Single Cylinder 12 Volt. Triumph/BSA Single Cylinder Motorcycles With 12 Volt Electrics (Positive Or Negative Earth) & Points In the Side Casing, Including: Triumph T20/M (Cub), BSA C15, B25, B40, B44, B50 SURE-FIRE Completely Replaces The Points, Condenser & Mechanical Advance Unit (ATU).