..........thanks for reply vicrod. Yeah, I just haven't found a place yet that can tell me if 56 used the voltage regulator. Agreed, it seems that it is ok on my initial 12V test , but I want to make sure . I ordered a regulator from Napa a month ago, there was none in stock in Canada !! , but it just came in from the USA so I can try it now. Just harder now to try cause I got the guages in the dash now and all wiring done, but I'll just have to crawl up under the dash and hook up the regulator and pull out the tank sending unit to try how it reads E to F . If anyone still finds the answer please post, Thanks guys.
...I'm just an old rock 'n roll Hot Rodder...