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Wiring an AEM A\F Gauge

FriscoProx

Well-known member
Premium Member
Anybody running an AEM air fuel gauge on a TNytro and was there anything special that i'll need to know to wire it in? Also, are those o2 sensor bungs weld in or threaded.

Thanks
Mike
 
Most are welded. Red wire to Hot. Black to ground and Purple to gauge. Use quick connects for ease of removal. Hope this helps. Boner Out....
 
i ended having to run a toggle switch for direct power cause my air fuel keep messing up when i hit the brakes and i tried all my power leads and they all did the same whats with that??
 
i ended having to run a toggle switch for direct power cause my air fuel keep messing up when i hit the brakes and i tried all my power leads and they all did the same whats with that??

What does it do when you hit the brake?? These gauges take a second to give the current temp reading. They are not instant like people think, so when you get off the throttle for a second you will probably see a higher number till it see that. That doesn't mean it's not working though. The gauges like a constant throttle position to give a reading. Hope this helps.
 
We wire a rely for clean power straight from the battery, your o2 sensor draws 5-6 amps so your little accessory plug wires are too small to do the job. Go to radioshack and get a 6$ auto relay and the diagram is on the back of the package, works slick. Also the fuel pumps should probably have a good larger wire/relay to run the msd pump too.
 
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