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Thread: seat skins / covers: Review, notes, modifying for heat + ventilation

  1. #21
    Senior Member
    Join Date:  May 2011

    Location:  Norton, MA

    Posts:    862

    My VIN:    767 (3.0L EFI/EDIS)

    I have an MS II, so I had to build a new input and output circuit (which is described in the hardware manual, and wasn't that difficult), and I decided to use the DB15 for the external connections. I'm also using one of those Arduino-friendly 5v relay boards instead of an automotive relay to keep the control circuit simple.

    I was going to try to have MS automatically turn off the A/C on WOT, but it seems that I'm not allowed to have A/C Idle Up and a programmable output use the same pad. I could wire up a second output pin and another relay or some other logic in the A/C power circuit, but I realized I don't really care quite that much. My custom UI will also be reading a bunch of state from MS over CAN bus, so I can have that turn off the A/C instead if I like. A/C idle up also removed a relay from my custom UI plans, since I can just pass the 5v signal right from my Arduino to MegaSquirt's pin.

    -- Joe

  2. #22
    '82 T3 FABombjoy's Avatar
    Join Date:  May 2011

    Location:  Lansing, MI

    Posts:    910

    My VIN:    10270

    Lets bump your MS thread and continue this there.
    Luke S :: 10270 :: 82 Grey 5-Speed :: Single Watercooled T3 .60/.48 :: Borla Exhaust :: MSD Ignition :: MS3X Fully SFI Odd-fire EFI :: DevilsOwn Methanol Injection - Game console parts, kits, games and more. [shop] [wiki] [RSS] [f] [t]

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