I test them with an Ohm meter. Take the govenor out of the trans and secure it in a vise. Attach a test lead to the contact terminal and the other to ground. Put the drive end in your electric drill and spin it up. If it pegs the meter it is OK, if not it has problems. If it tests OK and not working on vehicle you have problems with other components.
Fred

Last edited by rfs56trk; 01/16/2008 2:07 AM.
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine