47-55.1 ignition switch issue no pin markings

[keith808]

I bought a (1954-55 1st) Ignition Switch - Original Style from Classic Parts. part number 53-407. here is the link.

https://www.classicparts.com/1954-55...ctinfo/53-407/

it has no identification marks (bat, ignition, acces.) on the pins. i called them and spoke with the tech department and parts. no one knew and they said they sell them all the time and people figure it out. Well I am not great with electrical.
Anybody know a trick to figure out which pin is which? or if any of you bought this part and know which pin is which?

Thanks for any help..