I think I need to replace my speed sensors on the the transfer case but I am having a little trouble finding them. My question is... What is the exact name of the part as it would be listed in the parts catalog? Where can I buy them?

97 xlt 4.0 ohv with control track


Thanks

The parts break down for my 96 control trac calls them the "upper and lower' speed sensors and lists the part number as "7F293". The description of operation refers to them as Hall effect sensors.
C-Trac Function

The new C-Trac transfer case (7A195) transmits torque to front wheels through an electromechanical ball ramp clutch after a predetermined delta speed between front and rear driveshafts (4602) is exceeded. These driveshaft speeds are monitored using Hall effect sensors that send signals to the new on-board Generic Electronic Module (GEM). Upon observing an exceeded delta speed, the GEM then activates the transfer case clutch coil with a varying current to minimize the delta speed.

I don't know where to get them, Try Ford I guess.