Truely plug and play installation. The hardest part of the install is contorting my big fat body on the passenger floor and drilling the holes to hold the fuse block. Once that was done, it was a snap running the wires and plugging everything in. I needed this to run my plow’s hand controller which if hardwired would stay on all the time. Highly recommended for accessories that you’re adding that you only want power to when the key switch is turned on. It also will make future accessories easier to route wires and give a much cleaner end product.