I am installing an electrical fuel pump on a 1978 Sears GT18 powered by a twin cylinder 18hp Onan. I haven't taken apart the mechanical fuel pump to diagnose its issue. I have just decided to install the electric. I wanted to have power to the pump just before running so I thought I would tap into the solenoid to the starter. I grounded to the frame. When I turn the key to accessory nothing happens; as I expected. You need to turn the key to start which is one more click over. However, nothing happens there either. No sound or anything. Perhaps I didn't chose wisely as a source of power. I would like to know how others were successful. I also read that these electric fuel pumps are not good at pulling the fuel but are better at pushing the fuel. I have the fuel pump roughly the same height as the fuel tank (which is in the rear of the tractor under the seat). I may have to lower it more. I also have the fuel pump positioned vertically instead of horizontally. I'm starting to wonder if that would be a problem as well. First and foremost, though, is what should I hook up the power source to. I do have the schematic which I have attached. Thanks for your assistance.