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Thread: AEM 30-4100 wire issue

  1. #1
    Potential Tuner
    Join Date
    Oct 2016
    Posts
    8

    AEM 30-4100 wire issue

    Tried searching for it, couldn't find it, tried looking on youtube, couldn't find it....so here I am.

    I have an AEM 30-4100. Sensor is in place. Gauge is all hooked up to the truck, it is receiving a signal. I have a MPVI-PRO. There are two wires coming from the AFR gauge that need to be hooked up. a white one (Analog output) connects to any auxiliary unit that accepts a 0-5 volt input. The other wire is a blue wire (Serial output) connects to a RS-232 com port for hyper-terminal data logging. Which spot on the EIO Plug does each wire go to? I have hooked them up in spot 2 and 5 and even switched them...got different readings each time. I am looking to have the HP Tuners cable a permanent fixture in my truck, so I want to make sure I am doing right.

    I was also having a hard time getting the VCM Scanner to receive the signal from the wideband....I have been able to fix that....finally.

    The files I have attached represent the white and blue cables hooked up differently.

    If anybody can give me some help on why I can't get my scanner in sync with my AEM gauge; that would be great. I am tracking that my gauge is in AFR and the scanner is Lambda. But as it is right now, I can't make any adjustments to my MAF Calibration in the editor without causing damage.

    Thanks for your help.
    Attached Files Attached Files

  2. #2
    Senior Tuner
    Join Date
    Apr 2005
    Location
    Sugar Land, TX
    Posts
    1,198
    Here is how the 30-4110 is wired. Follow the wires and not the color of wires. I just used what I had.
    Attached Images Attached Images

  3. #3
    Potential Tuner
    Join Date
    Oct 2016
    Posts
    8
    I'll give that a try....or something of the sorts. I don't plan on using the cigarette lighter though.

  4. #4
    Senior Tuner
    Join Date
    Apr 2005
    Location
    Sugar Land, TX
    Posts
    1,198
    Cigarette lighter may not be perfect but it has worked for me on multiple cars. It's easy and on a switched circuit.