I have a 1995 Seadoo XP. The Ski starts and runs great but after 20-30min the battery light will flash on and off while riding. After doing this for another 20-30 min the ski will not restart after being shut off. When you try to start the ski it does nothing no lights no cranking or cliking nothing. After the Ski sits for about an hour it will start and run fine again for about 20-30min. I have checked battery connections and looked for loose wires but everything is tight and making good contact. Please help!!