I have a Fuel safe fuel cell and Autometer Phantom gauges in my '66 Fb. I can't get the gas gauge to work. I contacted Centriod (the maker of the sending unit in the fuel cell) & built the required voltage regulator to send a constant 5v to the gauge, but I think the autometer gauge needs 12v to it. The instructions were for wiring the sender to a stock Mustang gauge. Does anyone have this setup in their car??? How did you wire it up?