My 1988 Suzuki GSX600F Katana with 31k miles is blowing the second from the rear 10 amp fuse. The Tachometer, turn signals, and brake lights stopped working. I have cleaned the connections under the fuel tank and the battery terminals. It runs with the tach and lights working when I hook up the jump starter to it, but immediately blows the fuse when i disconnect the jumper cables. Any guesses? Garage kept and in very good condition.