Up@12, I'm not sure if this will help, but I looked your problem up in my service manual, and the only thing I could find in the trouble shooting section says,
1. Contaminated speedometer sensor (remove sensor and clean off metal particles).
2. Loose connections.
In section 8.34, page 8-63, it shows the picture of the location. I looked on my bike, (softail deuce) the speed sensor is on the top of the transmission, as you are facing it on the right side of the bike, the speed sensor is towards the back of the transmission, on the top. It has a silver screw on the back part, and a black plastic/rubber piece on the front of the sensor.
The speed sensor connector is located towards the center of the bike, in front of the rear tire, above the TSM/TSSM, towards the right side of the bike.
Okay Glider, can you help here? Am I close?
Up@12, I'm just trying to help, no guarantees......kind of a guess, I'm just trying to learn something here too.
Good luck! :s