Quote:
Originally Posted by 50fordcoupeman
.... I did not know the gauge must match the sending unit. ...
|
It's kind of a crap shoot.
'55 was the last year of 6 volt positive ground electrical systems.
'56 was the first year of 12v negative ground, and sort of an experiment by Ford because...
In '57 they improved and updated their dash gauge electrical design again to a more standardized version.
"Replacement" style parts and parts designed for '57 and newer generally work together.
OEM style and NOS electrical parts before '57 are more of a challenge.
The odds of a gauge & sender working correctly together go up if you get them as a pair, from the same place at the same time. If not the seller can easily blame the 'other' part, and you're usually stuck with it. (if they even accept returns on elect parts)
.