Learn how to build an electric car! This step is working on the motor coupler.\rbr\rbrConverting a Dodge Neon to electric so you can too! I you want a full step-by-step on how to build an electric car, check out my .\rbr\rbr\rbr\rbr Dodge Neon Electric car conversion: building the adapter plate, laying out motor bolt holes.\rbr\rbr Converting a Dodge Neon to electric. Working on the adapter plate and coupler. Part 3.