How To Wire One Throttle To Two Speed Controllers

Common electric scooter, bike, and go kart speed controllers use a 1-4 Volt DC input signal to control the motors speed. It does not matter where the input signal comes from as long as it is a 1-4 Volt signal. Most throttles have a 0.8-4.3 Volt output signal just to be on the safe side.

Wiring a single throttle to work with two speed controllers is a very simple and straightforward procedure. All you need to do is wire the throttle's + 5V DC input power wire and negative wire to one speed controller, and then wire the throttles output signal wire to both controllers. This method will also work with more than two speed controllers.

If one battery pack is not shared between each controller and each controller has its own battery pack then the negative wires of each battery pack need to be connected together in order to make the circuit below work.