It was difficult to install but worked great. I removed the fuel hose from the tank to the filler neck fitting and then cut it as needed to fit the kit pipe. Reinstallation was not easy as space above the main fuel tank is limited. After that, the system worked fine, but it took several hours to empty the entire tank into the main tank. I have left the ball valve between the secondary tank open for several hours, but the main tank has never overflowed. I could leave it open while driving and it kept up with the flow of fuel from the main tank. This addition really helped avoid expensive truck stop fuel on the road.