GMPP LS Harness Owners

Discussion in 'High Tech Retrofits' started by badazz81z28, Feb 25, 2018.

  1. badazz81z28

    badazz81z28 Veteran Member

    14,957
    191
    May 4, 2001
    Las Vegas, NV
    Team,

    I cut my OBD II connector to shorten the wires and the picture I took pre-cutting doesn't match the color coding I'm seeing on time.

    On-line it show the Tan Wire is the GMLAN High and the Tan/Black is the GMLAN Low however on my OBDII based on the color shielding alone, it shows its pinned backwards....Can someone confirm maybe this is just a GMPP Harness thing?
     

    Attached Files:

  2. Goat

    Goat Veteran Member Lifetime Gold Member

    1,813
    28
    Jun 7, 2001
    moncure, NC
    Here's mine - little fuzzy...Can't really tell from the pictures, but there are 2 tan wires, both entering the same hole and 2 tan/striped wires going in the same hole opposite of the tan ones.

    wire1.JPG wire2.JPG wire3.JPG
     
    Last edited: Feb 26, 2018
  3. badazz81z28

    badazz81z28 Veteran Member

    14,957
    191
    May 4, 2001
    Las Vegas, NV
    Is the two solid tan wires installed in one slot over of the red wire? Pin 14

    The tan with stripe in hole 6
     
  4. Goat

    Goat Veteran Member Lifetime Gold Member

    1,813
    28
    Jun 7, 2001
    moncure, NC
    I'll have to look more closely again tomorrow - not sure about pin #s...
     
  5. badazz81z28

    badazz81z28 Veteran Member

    14,957
    191
    May 4, 2001
    Las Vegas, NV
    Any updates by chance?
     
  6. Goat

    Goat Veteran Member Lifetime Gold Member

    1,813
    28
    Jun 7, 2001
    moncure, NC
    Sorry, didn't make it out to the shop yesterday. I will for sure today though...
     
  7. bigkat_83

    bigkat_83 Member

    30
    8
    Dec 7, 2014
    Bogart ga
    Mine is pinned just like the one in your pictures and works fine. Been using it with HP tuners and a OBII to Bluetooth converter.
     
  8. badazz81z28

    badazz81z28 Veteran Member

    14,957
    191
    May 4, 2001
    Las Vegas, NV
    so black striped tan wire pinned right next to the grounds? and the solid tan pinned one over from the red?
     
  9. Goat

    Goat Veteran Member Lifetime Gold Member

    1,813
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    Jun 7, 2001
    moncure, NC
    Ok, don't see any numbers on the backside, but here is the wire arrangement:

    wire4.jpg
     
  10. Goat

    Goat Veteran Member Lifetime Gold Member

    1,813
    28
    Jun 7, 2001
    moncure, NC
    Did that help?
     

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