I'm working on my father in laws 2003 Polaris Sportsman 600 Twin. You would try to crank it and the display/lights would turn off and you would just hear the starter solenoid clicking. But sometimes if u hooked a car battery or charger to it you could get it to crank. That quit so I got a brand new sealed battery and same problem happened. So I tried hitting the solenoid (professional tactics) and even tried putting a screwdriver between the terminals on the solenoid to jump it. Now I'm worse off. Nothing turns on! No display no lights and a brand new battery. I even disconnected the 2 leads to the solenoid and connected them strait to the battery but no power. I didn't think these atvs had changeable fuses. Any ideas? I'm many hours in and at a loss!