You guys confuse new guys (and even us old guys).
bartamos: "I guess AD's don't have stomp switch side terminal? If not, then I guess it was improved in TF to provide direct voltage, . ."
[there is no need for a foot-starter starter switch with side terminal on a 6v system - the 6v coil gets the full/direct voltage (6v) when cranking]
Deve: "No second wire to the coil on an AD in 12v mode."
[a second wire can easily be added/use in "12v mode" - and should be on all manual-transmission foot-starter truck 12v starters]
The side terminal was no improvement for A-D trucks.
All A-D trucks were 6v. There is no need for a side terminal on the 6v starter switch.
If an A-D truck is later changed to 12v (I will not call that an improvement, just a change), the starter-switch with side-post can easily be used to provide full 12v to coil/points, when starting/cranking. This is possible even if you use a 6v starter on a 12v system - just put the 12v starter switch with side-post onto the 6v starter.
