so im almost finished the rebuild on my sm 420, and i noticed these electrical contacts on my gearshift when i was installing it to test it, being as my other electric switch is somewhat temperamental id like to find the missing piece(s) to use the one in the knob. has anyone found a source for this? my usual guy hasn't ever seen one like it apparently.
I had a 2 speed shifter on my 1957 550 series. It was a 1998659 which was superseded by a 1998658. They were both obsolete while I had the truck. I replaced them with an Eaton 032861 push pull switch. websearch the Eaton part number and you will find them for sale all over the place. I had a 3 speed Eaton on a 1964 model that used a switch on the gear shift. I found one of them on eBay.