A New D6322 Vehicle Side Wiring Harness. Sometimes referred to as the "1875 Wiring Harness".
This is the same as the Fisher, Western, Blizzard 51086.Â
This is just the control harness, you will also need the power harness # D6341 or 51086.
This is for the in-bed spreaders SP-3000, SP-6000, SP-7500, SP-7550, SP-8000 and tailgate spreader SP-1675 and SP-1875. Also fits tailgate spreaders SP-575, SP-1075 and SP-1575 (not the -1 versions). It connects to the SnowEx control # D6527 (or aftermarket control # 9032021) and the spreader harness D5524. Some places show this as 311" long and others have it marked as 420".
This does not include the controller. That is sold separately.
Make sure you have dielectric grease. Corrosion is the most common destroyer of these plugs.