Hi all, just wondering if the ignition housing or the tumbler/key set determines how many positions a switch is? For example I have an original 31899 3terminal ignition housing and I'm looking for a tumbler/key set for it, it's gotta be 2 position though, so are all the tumblers the same and is it the housing that determines how many positions or is each tumbler different eg. 2 position versus 4 position? Thanks boys Adam