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Testing Fuel Gauge

Testing Fuel Gauge

Hi to all, Tonight I need the help of the electrical department. I have today got my fuel gauge back from being rebuilt at XK Unlimited. I have mounted it on instrument panel, and with no wires connected I have checked resistance to ground on the terminal where the green wire (Hot from fuse) should terminate. The resistance is low so I am sure I will blow a fuse if I hook it up. What am I missing, do I have a complete missconception as to how this circuit should work. Any comments or help will be appreciated. - Thanks, Neville Laing

Neville, To test your sender unit and fuel gauge, set a 12 volt battery on the bench. 1 - run a hot lead to the hot side of the gauge, 2 - run a lead from the ground post of the battery to one side of the sender unit, 3 - then run a lead from the other terminal of the sender unit to the other terminal of the gauge, 4 - actuate the sender arm. At the top the gauge should read full at the bottom it should read empty. It's a good idea to do this on every restoration, because its quick and simple. If you do this check and everything checks OK, then later if a problem shows up when everything's all together, check the continuity of the circuits to check for a broken wire or improperly installed wire. - Regards, Wray Schelin

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