1. How to Mount the Motor into a RC vehicle M3/M4 mounting screws (4*M3 & 4*M4) are needed here, as the mounting holes are 8mm in depth, so we don't recommend using the M3/M4 screws with the length exceeds 10mm to mount the motor into your vehicle. (Note: please choose the right mounting screws as per your chassis.) Please choose the right mounting screws as per your chassis. 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.