1. How to Mount the Motor into RC vehicle M4 mounting screws are needed there (four for the 4985 motor, eight four the 5687/56113 motor), as the mounting holes are 8mm in depth, So we don't recommend using the M4 screws with the length that exceeds 10mm to mount the motor into your vehicle 2. How to Connect the Motor to an ESC There is no polarity on the A/B/C three ESC-to-motor wires, so do not worry about how you connect them initially. You may find it necessary to swap two wires if the motor runs in reverse. 3. Recheck the Installation & Connections Recheck the installation and all the connections before turning on the power.