[PDF] Including 3- and 4-Port Isolation Modules with 2- and 3 Multiplex Harnesses Plow Lighting Harness Solenoid Control Connectors Control Side (end view) (pins) 1 4 2 3 4 Vehicle Side (end view) (sockets) 21 3 Pin No. Solenoid Control Wire Color Only 1Red 2Green 3White 4Black Pin No. Wire Color Control Function 1Red +12V 2Red Signal 3Black Signal 4 Black Ground 4-Pin Pin No. Wire Color Control Function Western 3 Port 3 Plug Wiring Kit Isolation Module Truck This is the complete Truck Side Wiring Kit for Western and Fisher plows. This is the 3-port isolation module and the 3-plug set up. If you have a 2-plug plow and you want to convert it, you will need the plow side #28053 to use this. You will also need the control, if you don't have it already.
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