Hi all, looking for some knowledge and help! I havent ran my ST2 much in the last few months but the battery, although a couple of years old, has been on optimate quite alot. Anyway after doing the chain sprockets, spark plugs ans oil/filter, I took it out for a 40mile spin with no worries. a few days later I was going to ride into work, it took a few attempts to start which isnt uncommon, got to the end of my drive and it died. I tried restarting it and after about the 5th attempt there was a bit of a bang underneath and that was it, when turing the key there is nothing at all, no dash no fuel injection, just dead. I tested the battery and it was putting out 8v, and even the optimate would just click like it wont accept a charge. So i got a new yuasa battery and went about fitting it, connecting the positive to the positive and the negative.....as soon as the negative makes contact it triggers the starter motor, tries to turn the engine over and sparks! This is without a key in the ignition. I am assuming somethig was damaged that went bang. Anyone have any ideas?