I have an 03 mastiff and the speedo is working completely intermittent. The bike has a brand new battery in it and I also keep it on a tender. I've checked the connections at the speedo and all is well, the speed sensor is also clean and free of debris. One thing I've noticed is that it doesn't sweep when turning the key on sometimes. Sometimes when it does sweep it goes negative and stays there. Riding down the road it doesn't work most of the time but randomly comes on and works great. I'm leaning towards a bad speedo. Any suggestions would be appreciated
