Trace the wires coming from all four blinkers on the bike, Look for bare wires or spots with significant cracks in the wire coating. Look specifically at any places the wires rub or pass through an obstruction, get pinched, bent sharply, etc. Sounds like somewhere along one of your wires your blinkers are shorting out when you turn them on, which should technically blow a fuse, since it isn't, but your bikes going nuts, it seems likely its shorting to another wire and not a ground. Possibly one of your fuel pump relay wires that run near them under tail. Maybe one of the rear blinker wires are shorting out to the fuel pump relay and killing the pump, then when you fuss around with the bike a bit something gets bumped and they seperate. Thats just a wild guess and likely not it but it gives you an idea of what to look for. Alot of these wires run near each other under your front seat by the battery box as well, could also check there. Anyways, good luck.