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Adam
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Fuel sending unit
07/26/13 at 19:26:07
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Can anyone tell me what gauge wires are used for the fuel gauge and sending unit, also the how its wired up. The wires were missing when i purchased my 3a. Thanks for any help and for taking the time
  
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garage gnome
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Re: Fuel sending unit
Reply #1 - 07/26/13 at 22:55:13
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The wire should be 14 gauge and the terminals should b marked, but I'll look at mine to be sure.
  
Nate in Western MA 1953 3A #3268, The Jalopy, '47 2A Wheelin' rig, '49 3A, #37071, unmolested, bone stock named Ted
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Re: Fuel sending unit
Reply #2 - 07/26/13 at 22:57:39
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Looks like it is pretty simple  One a single wire from the terminal on the sender to the fuel gauge.  The other side of the gauge to the ignition switch.   Not sure on the original wire size, but it should only carry a very small current.
« Last Edit: 07/26/13 at 23:04:30 by stony »  
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Adam
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Re: Fuel sending unit
Reply #3 - 07/26/13 at 23:42:15
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Thanks that helps out alot  Smiley
  
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gmcjr
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Re: Fuel sending unit
Reply #4 - 07/27/13 at 01:26:34
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The + terminal of the fuel gauge goes to a switched power source, the - terminal goes the terminal on the sender unit. It is important that the mounting flange of the sender is good and grounded to tank, (It's usually through the mounting screws or a staple in the flange gasket) and the tank is good and grounded to the body or chassis. 16 AWG wire is sufficient, the current draw is minimal, but like GG said 14 would probably be better due to being more resistant to damage. That being said my dog chewed the wire going to to sender unit in two last week!  Smiley
Hope this helps!
« Last Edit: 07/27/13 at 01:34:26 by gmcjr »  
Gary in N. Texas
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