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Thread: 7730 work with a 7520

  1. #11
    Join Date
    Feb 2016
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    8

    Default

    any ideas on what is causing this?

  2. #12
    Join Date
    Feb 2016
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    8

    Default

    How about posting a wiring diagram for a 7520 ign to 7730 GRID?
    maybe I can figure out something there

  3. #13
    Join Date
    Feb 2016
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    8

    Default

    Is this forum for helping people with problems?

  4. #14
    msdtech1955 Guest

    Default

    send the unit and sd card in for inspection 915-855-7123

  5. #15
    msdtech1955 Guest

    Default

    if it was not wired right ......it would not have started .

  6. #16
    Join Date
    Feb 2016
    Posts
    8

    Default

    Like I previously posted " I even changed the Grid with a known working one and still has the same issues. "
    I have a RMA number to return it, but I'm sure there's nothing wrong with it.
    All I'm asking for is a wiring diagram.

  7. #17
    msdtech1955 Guest

    Default

    7520 to a grid7520 grid.jpg

  8. #18
    msdtech1955 Guest

    Default

    remember : the max on the sd card is a 8gb class 10 .

  9. #19
    Join Date
    Feb 2016
    Posts
    8

    Default

    Thank You, much appreciated!:thumbup1:

  10. #20
    Join Date
    Feb 2016
    Posts
    8

    Default

    I finally found the culprit!!! MSD tech, put this in your notes for the next time someone has an SD card initialization error codes.
    Tracing down wires, I noticed that I had and RPM switch that I used to shift the car before installing Grid, still wired into the tach wire circuit.
    I removed the switch and no more red light shining on the Grid, it's all green every time the ignition is turned on!!

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