308 GTS low fuel warning light. | FerrariChat

308 GTS low fuel warning light.

Discussion in '308/328' started by bl10, Apr 25, 2022.

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  1. bl10

    bl10 Formula Junior

    Jun 8, 2011
    440
    Chatsworth, CA
    Full Name:
    Barry Leavengood
    Hi everyone:
    After 220 miles on full tanks fuel gouge showing about 1/8 tank but no low fuel warning light. So I thought this was the perfect time to verify either it works or not. I jacked car up from drivers side to transfer as much fuel as possible to right tank. Fuel pump ran dry and zero fuel pressure but still no warning light. Is there a way to test the low fuel warning light without removing the fuel level sender? There are three wires attached to the sender. Two have insulated connectors and the center one is just an open connector. I can't find a thread on this so any help would be appreciated.

    Thanks
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  2. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,785
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    What year, and version, 308gts?

    If a '78-'79 US 308GTS, touch the RN (red-black) wire to the N (black) wire with the key "on" = low fuel warning light should come "on".
     
  3. bl10

    bl10 Formula Junior

    Jun 8, 2011
    440
    Chatsworth, CA
    Full Name:
    Barry Leavengood
    Thanks Steve
    Its a 78 GTS US. I'll give it a try.
     
  4. bl10

    bl10 Formula Junior

    Jun 8, 2011
    440
    Chatsworth, CA
    Full Name:
    Barry Leavengood
    Steve
    I connected the black wire (center) to the red and nothing. just for grins I connected the Red to Purple (right and left) and the gauge went to full. Anyway looks like the light in the fuel gauge is bad or disconnected from when I had the instrument panel out to install the LED lights.

    Thanks
     

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