Razor OEM control module for the Razor E100 and E125 (version 1 WITHOUT the green "Go" button only). If ANY of the following apply to your E100, this controller is NOT compatible with your scooter: Your E100/E125 is chain driven and has a twist grip throttle. Your E100/E125 is manufactured by JD. JD scooter barcodes start with "JD" or "30". Your Razor E100/E125 scooter has an external green "Go" button. The wiring diagram for this part can be found at the following link: Razor E100 Wiring Diagram (Version 1) Note: Model versions can be determined based on the product ID code on your Razor product. The product ID code can be found on the battery cover and/or on the bottom of the frame. The 7th and 8th numbers in your product ID code are the version number of your Razor product (e.g. "01" = Version 1, "02" = Version 2, etc.).