Problems with my Speedometer. Replaced the speed sensor and still not working.

What is your question?

Traced the wiring all the way back and everything is ok. I removed the new speed sensor and found a socket that fit over the gear at the bottom of the sensor and turned it with an electric wrench and the speedometer started working. What could be the problem when I place back into the transaxle it still will not work. Could I have the wrong sensor were the gear is matching.