Two sizes of motors were used on the Diamond snow plow. The easiest way to tell is by diameter size of the motor. Our 3" motor replaces 15054 and our 4-1/2" motor replaces 15689. The 4-1/2 motor has twin posts. The motor solenoid we have replaces 15370. We also have plug-in type battery cables. The short end that mounts to the power unit assembly is a double cable with one female and one male plug. Correspondingly the red and black cables can be attached and disconnected by just pulling them apart. Replacement yellow and black control handles are sold each for the individual user.