Auto Meter Air fuel gauge

Discussion in 'Maintenance/Repair' started by Da_Roach, Jun 24, 2008.

  1. Da_Roach

    Da_Roach Toyotaholic

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    I'm buying a auto meter 7345 air/fuel gauge. Any tips on wiring one up? Pics would be good too.
     
  2. Nook

    Nook Addict

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    Isn't the 7345 a pyrometer, not an A/F gauge? Either way they should wire up similar, 12v keyed hot wire, ground, lighting, and if an A/F a wire to the 02 sensor, if a pyrometer a probe into the exhaust manifold.
     
  3. Da_Roach

    Da_Roach Toyotaholic

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    I ment 4375. Thank you. I know someone has installed one on there truck.

     
  4. Nook

    Nook Addict

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    I had an A/F gauge in my 75, but during the winter I replaced all the gauges with cyberdyne digitals, eliminated the A/F as it was only a narrow band and pretty much useless for anything but a light show. If you want an A/F for tuning or accuracy go with a wideband gauge and sensor.
    My old 75 didn't have a factory 02 sensor so I just welded a bung into the collector, mounted the 02 sensor, wired it up, I used a 4 wire 02 sensor, they are available as a 1 wire, 2 wire, 3 wire, or 4 wire depending on what type and style you want.
     
  5. TRUCK ACTION

    TRUCK ACTION Grand Toyotaholic

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    I run their #5775,was advised by LC to run one as Toyota's want to run rich.
    This is a non stock engine! It wired up pretty easily, just be careful as the wires are real small,solder all connections & use shrink wrap!:cool:
     

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