Riding a few days ago, just quit while in motion and nothing since. Solenoid clicks when press pedal. Battery connections tight and clean. Batteries charged. Checked motor with jumpers to the batteries (bypassed solenoid and what I assume is the controller, I'm new to this). Motor and wheels turn. Plenty of power to the solenoid. I have a nice burn on my wrist and my watchband is welded together between a couple of links to prove it. 36 volts at the motor. What next? Thanks in advance for any help.