Well need some Help ! BBS02 Speed Sensor ERROR 21. I found a rub mark on the wire coming out of the motor to the sensor . I think whats going on is one of the 3 fine wires in that cable has broke. My light comes on indicating the sensor is seeing the dowell on the spoke, but spinning the tire is not showing any mph on my DCP 18 Display. Then Shortly there after it quits & I get a ERROR code 21 on the display. I have looked at the Vids on fixing Error Code 21 & have tried all except replacing the controller. I really think I need to try a new Speed sensor cable before putting in a controller. So where would I get one of those & do I have to pull the motor off the bike to replace. Bummer as I may have 35 miles on this bike. PS, How do you clear error codes on your historical error code display ? Thanks