Peterson plow light wiring to fisher harness | PlowSite Go to the module with the wiring diagram. You should have headlamp power in. Then headlamp power out to the truck. Connect the plow, the module should switch over. Do you have power out from the module for the non working lights. A test light and a digital DVOM is very helpful. Can diagnose almost anything on your plow with those. Plow Lights 101 - YouTube Click to view on Bing27:19Simple easy Fisher Plow Wiring 1 Harness 2 Relay - Duration: The Plow Guys, Warning lights #3 snow plowing 101 - Duration: Snow Plow LED light install!Author: RVTEKViews: 26K Including 3- and 4-Port Isolation Modules with 2- and 3 PDF fileWiring Diagram – 61185 Park or Turn Harness Kit plow headlamp systems. Although intended primarily as a diagnostic tool for headlamp systems, the hydraulic system circuitry is also 5 Light Blue Valve S3 1 S e v l wa o V l l e Y / e t i h 6W Pin No. Wire Color Smith Brothers Services - Sealed Beam Plow Light Wiring In other words, the computer knows you added lights, and it does not like it. I also want to point out this is a vehicle specific requirement and has nothing to do with the brand of plow light. The wiring diagram below will work with any sealed beam headlight, fog light/driving light, or any replaceable bulb halogen light for that matter. Truck Lite Model Wiring Diagrams. Trailmobile Wiring Published at Saturday, December 14th, 2019 - 7:06 AM. truck Wiring Diagram. By Robert C. Battaglia. This amazing photo selections about truck lite model wiring diagrams is available to download. We collect this wonderful photo from internet and select the best for you.