Assuming an Automatic, it is on the passenger side toward the front of the transmission on the govenor housing (just back of the dipstick tube. It is a 7/16" headed plug.
On Manual, you have to remove the PTO cover and drill and tap for the sensor. You will lose all the oil so be ready.
On Manual, you have to remove the PTO cover and drill and tap for the sensor. You will lose all the oil so be ready.