Understanding the basics of your GY6 scooter electronics will ensure you are one step ahead of troubleshooting the majority of your problems. Chinese scooters often encounter troubles due to poor wiring and hear of frequent complaints of “not starting” or “not running”. The main problems in Chinese scooter electronics is not the components themselves but often haunted by poor connections and grounding. The information below is only to give a basic idea of the system and how it works. Each manufacturer may use different wire coloring and connectors and therefore should only be used to identify your system better but never to directly take as information to be exact.

First thing to understand is that in the GY6 world, there are two main particular systems that run the GY6 engine through the computer or CDI. The two particulars are separated into AC (Alternate Current) and DC (Direct Current) powered CDI systems.

AC-CDI – The AC-CDI module obtains its electricity source solely from the alternating current produced by the alternator. The AC-CDI system is the most basic CDI system which is widely used in small engines.

DC-CDI – The DC-CDI module is powered by the battery, and therefore an additional DC/DC inverter circuit is included in the CDI module to raise the 12 V DC to 400 V DC, making the CDI module slightly larger. However, the vehicle that uses DC-CDI system has more precise ignition timing and the engine can be started easier when cold.