So I'm having trouble with my windshield wipers. The previous owner broke the cover on the wiper motor and you can see straight inside, the circuit board, the insides, etc. The wipers turn on just find, but they seem to only run at one speed, as opposed to delay, low, and fast, and I can't turn them off unless I put them in the off position and then turn off the car. Since they run just fine, I assume it must have to do with the circuit board in the cover piece? If so, where can I get a replacement board? All my local parts stores only carry the motor, which doesn't come with the cover or the board. Thanks in advance!