Happened to my Goldwing about a month ago, first it was speeding up and slowing down when cruise control was set so I quit using cruise control and everything seemed fine for about 50 miles but it aggravates my right shoulder when I don’t use cruise control so the next time I tried using cruise it wouldn’t work and the speedometer and odometer quit working, then I noticed the self canceling turn signals also quit working, when I stopped for gas I checked for codes and got 11 which happens to be speed sensor, so I ordered new speed sensor from local dealer about $130 including tax, thankfully that fixed everything, i never heard of a Goldwing speed sensor failure before but mine definitely failed.