My 12 GT drivers side windshield drain had plugged up making it hold water. During a big rain storm the water got high enough to short out the wiper motor. Bought a new (rebuilt) motor for it and after install it only works on High and doesn't park the wipers when turned off. Is there a relay that controls the intermittent speeds, slow speed, and park? Or is it all in the motor and I got a bad rebuilt one? Any ideas? And yes, the drain has been cleared.