Gas tank sending

super651
super651 Senior Contributor
edited November -1 in HUDSON
I have converted my 6-Volts to 12-Volts on my 1946 Super-6.

I am installing the 1949 guages in the 46 dash.



When useing the 1949 fuel and water dash guages and using 12-volts do I need the constant-voltage-regulator wired to the guages ??

And is the size of wire important from the dash guage to the tank sending unite??

Need all the help I can get on this.

Thanks Rudy.

Comments

  • Uncle Josh
    Uncle Josh Senior Contributor
    The original wire will do fine. Actually the only thing it 'sends' is information on how much 'ground' you have.
  • MikeWA
    MikeWA Senior Contributor
    super651 wrote:

    And is the size of wire important from the dash guage to the tank sending unite??

    Need all the help I can get on this.

    Thanks Rudy.



    Rudy, As a general rule, one of the few things you don't have to worry about on a 6 to 12 conversion is the wire size- the original wiring in your 6 volt car is bigger, and therefore has more capacity, than that used in 12 volt cars, so will do fine on 12 volts. That being said, you DO have to worry about the CONDITION of the original wiring. . .

    Mike
  • super651
    super651 Senior Contributor
    Thank you both Josh and Mike.

    you were good help to me. Thanks for the reply Rudy
  • hudsonguy
    hudsonguy Senior Contributor
    I also installed voltage reducers for my '49 gauges. Then I read (I think it was Walt's Garage) that on these earlier gauges you don't even need to do that. I wish I had more specifics, but I'm pretty sure up until early 50's sometime, you don't need to do anything to run them at 12V.
  • super651
    super651 Senior Contributor
    Thanks Hudson308.

    I will order the volt-reducers from J.C.W. Thanks Rudy
  • Park_W
    Park_W Senior Contributor
    I think if you measure the voltage coming out of those voltage reducers when hooked to these gauges, you'll find they're not reducing the voltage much, as they're designed for circuits that carry a fair bit more current than these gauges draw. I think the '49 gauges will read fairly accurately on 12v, the only downside being possibly shorter service life. The '51 and later gauges do read a bit higher high when run on 12v. THe NAPA/Echlin IR2 regulator, listed for some early 12v Fords, works perfectly for the later gauges running on 12v., but I understand that item is now discontinued. I've not identified a good substitute.
  • mars55
    mars55 Senior Contributor
    Park W wrote:
    I think if you measure the voltage coming out of those voltage reducers when hooked to these gauges, you'll find they're not reducing the voltage much, as they're designed for circuits that carry a fair bit more current than these gauges draw. I think the '49 gauges will read fairly accurately on 12v, the only downside being possibly shorter service life. The '51 and later gauges do read a bit higher high when run on 12v. THe NAPA/Echlin IR2 regulator, listed for some early 12v Fords, works perfectly for the later gauges running on 12v., but I understand that item is now discontinued. I've not identified a good substitute.



    Here might be a source.



    http://www.parts123.com/parts123/yb.dll?userwatch~dynamicSearchPage~cadeffcH



    Then select Category = Dash Gauges

    Year = 1957

    Make = Ford

    Then GO
  • mars55
    mars55 Senior Contributor
    Hudson308 wrote:
    I used two voltage reducers (one for each gauge) from JC Whitney (part number WF710376Y) when converting my '49 to 12 volts. The heater motor got their part number WF135606U voltage reducer.



    JC Whitney doesn't seem to offer the WF710376Y voltage reducer anymore.
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