This is part # 26347 also known as #26377 for Western, Fisher, and Blizzard plows. This is the harness on the plow side that runs into the lights for a 3 plug system it is 11 pin the pins are offset. If you have an older set of lights you can use this harness to adapt to the Isolation module wiring. This plugs into the truck side light harness 26357. We also recommend getting a tube of Dieelectric grease to protect these plugs.
This is the wiring for the earlier lights If you have the New larger lights you need harness 28213.
Western Went from Relay wiring, to 4 port wiring, to 3 port wiring, and now Multiplex wiring. We have all of these options available. We will also trade in your old wiring.
Here is a link to the Western Wiring Schematics guide
NOTE: If this Kit is used to change a Western unimount over to the newer wiring. You will need to Check your light brackets. If you have a Western unimount that has the longer light brackets this Light harness will not Reach and Western does not offer a harness that will reach so you have 2 options you either need to Extend the harness or the Better option is to get the short light brackets. If you are unsure you can look at the Diagram below We do sell the light brackets.