This is bar none the best controller on the market for your 4 pin white connector FISHER snowplows. This is the multifunction/multibutton version that will operate all the versions of plows, straight blade, V blade, expanding (XLS) blades. Just be sure your current controller harness plug is the 4 pin white connector version. I also offer a very similar straight blade-only version that some prefer because it has less buttons so it's simpler. FISHER stuffs their controllers with Chinese parts that have a very high rate of failure and parts are very expensive to replace. This is an all American sourced and made controller that uses readily available and affordable parts. If you need to rely on your equipment, THIS controller is the solution. My favorite feature and one I get lots of positive feedback from is the wing buttons, the factory FISHER controllers the wing will go the opposite direction the 2nd and subsequesnt times you tap the button........this controller does NOT do that.....it goes the same direction. See video. This is a superior quality controller for much lower cost than factory FISHER. That's a textbook win-win scenario.