The speed/distance sense wire green/red strip wire is open going to the TSSM and ECM has an open connection, which is basically detects the speed and distance traveled sending a data pulse train to the speedometer. Do you have a wiring diagram, and did you do something like wash the bike or do mods under the instrument cluster, tank or under the seat? May also want to check all the way back to the fuse block. Sportsters are notorious for open fuse compartment that gets wet near battery cover and seat gaping hole. Get some contact cleaner and dielectric grease and buff everything clean with a pen knife and lightly coat.