by Philip » Sun Nov 29, 2015 11:24 am
You should see 12 volts at the plug.
Use a meter and check the wiring back up to the speedo head.
A bad plug at the VSS can cause problems to. I have replaced two plugs over the years on my truck.
93 W350 Club/cab w/duals, buckets & console, B&W flatbed, G56, 6 spd, 3:07 rears, gages, HX40/16, 4" exhaust, 6X.018 sticks, rear air ride suspension