Originally Posted by ALBUQ F-1

The 48-52 starter button has one wire and it grounds the wire when pushed. The 53-on starter button looks exactly the same, but has two wires that it connects when you push it. The older solenoid coils were "hot" and just needed the terminal grounded to close, while the newer ones want power applied to them. So the two-wire buttons have power from the battery or ignition switch on one wire, and the other goes to the solenoid.

Originally Posted by petey shoes

can't argue with facts! my contention was that perhaps switch was a little knarly, so possibly could short out. guess i was thinking worst case scenario.