The Assembly Process E-flite introduced the EC3 connector assembly to electric models of all types for use in a wide variety of electric model and power applications. It is commonly found on E-flite, Losi, Spektrum and Align products as standard equipment, and will also be found on other brand products in the near future. But, for those products that do not include a factory-installed EC3 connector, the steps outlined below will help you install the appropriate EC3 connector on your batteries, electronic speed controls, charge leads and more. Horizon RC /ProdInfo/articles/1768-EC3.flv