This is an SOS harness. SOS is used on the newer plows they have a red plug end on the power cable.  It has a 4-pin end for the trailer plug on the vehicle, a 9-pin plug for the controller and a 12-pin plug for the plow harness. This will plug into  controller 23022. This harness is used on many of the newer plows including the Meyer Wingman plows , the Lot Pro plows, Super blade and the V plows. This harness is also for the HFP mode (hands-free plowing) on these Meyer plows. There are different versions, so make sure the plug out at the plow has 12 pins and your controller plug has 9.