Originally, I could hear the motor come on when the directional switch was put in forward or reverse, but when i pressed the accelerator I couldn't get anything. Directional contactor tips were worn and pitted. They were closing, but it was a roll of the dice whether they'd make good contact. Replaced tips, and now I don't even get the motor to come on anymore. I can't find what changed. It's all hooked up exactly how it was before.