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Thread: Wideband connection question

  1. #1
    Senior Member
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    Default Wideband connection question

    I have an AEM wideband that has a single 0-5v output wire. But my V2 needs a + and - input so... Do I just hook the negative input from the V2 AD input to the trucks ground?
    -John

    1991 RCSB 2WD Sierra LQ4 swap, 220/224 112 cam, Twin VSR 6766 turbos
    4L80e w/shift kit, PY 3600, and 3.73 gears.
    22 PSI and E85, 4300# with driver. 9.7@138, 1.47 sixty
    :drivin:

  2. #2
    Senior Member
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    Anybody??
    -John

    1991 RCSB 2WD Sierra LQ4 swap, 220/224 112 cam, Twin VSR 6766 turbos
    4L80e w/shift kit, PY 3600, and 3.73 gears.
    22 PSI and E85, 4300# with driver. 9.7@138, 1.47 sixty
    :drivin:

  3. #3
    Lifetime Member mr.prick's Avatar
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    Default

    It won't hurt to run a ground to the AD-
    it may not be necessary tho.
    The AEM does not have a dedicated analog ground like other WBO2s,
    it maybe tied to the power ground internally.
    I know for serial connection you'll need to run a ground for the serial port.

    Make sure it is a clean ground and not connected to anything that emits a "low signal" i.e. 0.1 volt ground
    Are you getting a voltage reading with just the analog positive connected?
    512k RoadRunner Firmware 12.14R
    FlashScan V2 Bootblock V2.07.04 Firmware V2.07.22 EFILive V7.5.7 (Build 191) V8.2.1 (Build 181)
    LC-1 WBO2

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  4. #4
    Joe (Moderator) joecar's Avatar
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    Default

    Does your AEM have a serial output... if it does, then this will be better than the analog connection,

  5. #5
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    The AEM instructions tell you that the blue wire and black are to be used that is how I did mine and works fine. You have to y the black wire and put one to ground (I just used a earth plug) and the other end of the y goes to the plug for the flashscan

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