For Yamaha Drive II models. Fits electric models 2017 and up. 48 volt, side mount, four terminal with copper contacts. Solenoid relays play an important role in starting vehicles. Installation instructions are not included. This part is an OEM replacement. This solenoid will not fit gas models. Will also not fit Yamaha models earlier than year range listed. It is important that you know the year, make and model of your golf cart before purchasing this solenoid. Professional installation is highly recommended. We do not offer technical support.