I had the same problem. I was riding on a long highway trip. About halfway to where I was going the speedo just stopped. I had just replaced the speedo with an 190 , 1100 unit. I thought it was that. When I got home I bought a used speedo drive and cable. I started to disassemble and found the cable snapped. Which for grins the 1100 cable is shorter then a 750 cable ( cluster mounts lower on a 1100 ). It still worked for me but its tight stretch. Check your cable, and then look at the drive.