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ArcticSIlver

Wire in AEM gauges/sensors

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I have a link g4+ for skyline GTT, I would like to wire in my AEM gauges/sensors. However I'm unsure where the AUX negative from the sensor needs to be pinned in to the ecu. The AUX 5V positive from the sensor needs to be pinned into a AUX on the ECU ( pin 104, 106, 107, 111, 117, 118, 5, 11, 13, or 17) correct? Also why are some AUX pins duplicate on the ecu? (AUX 1,5) sorry for my incompetence, i'm new to this.

GTT pinout.png

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They will need to be connected to analog inputs.  The best option to connect these is using an expansion harness - they are quite low cost from a link dealer.  You will need two expansion harnesses to connect 3 analog sensors.  

qqYtKag.png

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So I got the expansion harnesses and Im a bit confused. For the aem gauges, Fuel pressure and Wideband have analog 5V out but no analog ground, however the oil pressure has analog 5v out and analog ground. How do i go about wiring in the fuel pressure and wideband to the expansion harnesses? 

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Fuel pressure - 4401-09831

Oil Pressure - 30-0301

AFR - 4100-70683

I just got off the phone with AEM and they said that some of there gauges do not have analog negative output and just the analog positive can be hooked up on those ones. Is that safe? Does that sound right?  I dont want to fry anything.

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