This is a replacement accelerator micro (stop) switch for use with gas and electric G14-G22 model Yamaha golf carts. As a safety mechanism, this switch kills the car when the pedal is released. When the pedal is depressed, the switch is activated and sends a signal to the solenoid, allowing your golf cart to start. When it is released, the circuit is open and the car dies. If your car won't start and you don't hear the solenoid click, the problem could be either this switch or the key switch.
Yamaha # JF7-82817-20-00