Fifthave, a moderator here in the "Electrical Bay", has the kick down switches and relays here:

Fifth Avenue Parts Counter


You can also find them on ebay. That's where I got mine. You can get a wiring sub harness for the OD tranny from Jim Carter's


Larry Kephart
1937 Chevy Utility Express (Deerslayer)
1955 1st 3100 Chevy (BillyBob)
2017 Cadillac ATS-V (Elvira)
Boca Raton, Florida
e-mail: [email protected]

http://www.laroke.com/larryk4674/1998/billybob.htm