I am having an issue with my 97 K1200RS where the battery warning indicator is flashing constantly while on and I have no speedometer or gear indicator. I do have the gas meter, the temperature gauge, and turn indicators working. I had the battery on the tender overnight and the tender read green as charged. I have also taken it out for a ride and it seems to ride fine, besides the fact that the instruments aren't working properly. So far all I have tried is detaching the cables from the battery and sanding the connectors to remove any possible corrosion. Any thoughts?