If I understand you correctly (I watched your video), try this. You need to ground the gas gauge lug or terminal, not the wire going to the sender. So, with three terminals on your gauge, 1. 12 volt, 2. ground, and 3. sender hooked up correctly, remove the sender wire from the terminal and full it goes. Remove the wire and ground the terminal and empty the gauge goes. Now the hard part...the above is for a zero to ?(let's say 90 ohms) sender. Some senders are ?(let's say 90 ohms) to zero, and some are like my Packard 72 ohms to 10 ohms. Do you have the correct sender for your replacement gauge? If that ain't enough, some fuel gauges are not fed a steady diet of 12 volt. They use a device that puts out a voltage pulse, somewhat like a blinker can. Sorry if I stirred up the mud.
Last edited by beltfed; 03/20/2011 2:18 AM.
