Report Fuel Pump current supply issue in G4+ Posted March 21, 2020 Missing load is the key thing here. Its going to make all the tests suspect. Have you got a test light handy? How about an old fog light or head light bulb - these draw about half the load of a fuel pump so are completely safe to substitute. Unplug the 2 pin plug in front of the shifter that feeds the fuel pump. Connect you headlight bulb instead of the fuel pump. If you want additional numbers, connect your multimeter in parallel. With a ~5amp load sitting there, the voltage should be 0. turn the aux output on, the bulb should light up brightly and you should still see 11+ volt on the meter. If you see 0 and the bulb doesnt light, its likely a broken wire or faulty relay. If you see something like 3 -8v and the light is on very dimly, then you probbaly have a correoded contact or a slightly damaged wire somewhere. Repeat this test but conencted to the outputs on the back of the fuel pump relay in the fuse box. This will tell you if its the wiring from relay->pump thats the problem, or the relay/something before it. Keep checking "easy to get to" places along the path from battery to pump.