SnowDogg Part # 16160400 - Plow Control Harness is your controller wiring harness on the plow side of your setup. This is the harness which is connected to all of your HPU solenoid coils. One end of the wiring harness will have small coil plugs with different colored wires along with a positive and negative cable. The other side of the cable will have a large mail plug with (2) large pins on the bottom of the plug and smaller pins on the top. This is used on plows such as the SnowDogg EX, HD, TE, MD, and CM snow plows.