You should be able to follow the wires to the top of the tank and feel by hand where it is from the rear and the side. Kind if eyeball the location from above and cut a small hole to get started. I need to do the same on mine as I carry an extra fuel pump on the trail. On the Planet, I am sure there is a thread about it there. Get yourself some silicone and some aluminum angle so you can make a new frame and voila, easy access to the fuel pump forever!