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Thread: Key Ignition vs. Toggle Switches

  1. #41
    Senior Member GWright6970's Avatar
    Join Date
    Jan 2011
    Location
    Vacaville, CA
    Posts
    359

    Default Re: Key Ignition vs. Toggle Switches

    John,
    Ok...now I got it!!

    Thank you for your patience... The Rotax drawing shows grounding everywhere... I got caught up in that drawing.... This way is simple!

    Cheers!
    Grover Wright
    Flying a KF IV-1200
    ROTAX 912UL

  2. #42

    Join Date
    Aug 2016
    Location
    Mesa, AZ
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    1

    Default Re: Key Ignition vs. Toggle Switches

    46B989E2-3D50-4999-99DD-A97DF5C668CA.jpg

    This is a ACS wiring for grounded Bendix mags. I’m working on a Kitfox that is not wired like this. Terminal 3 and 4 were reading ground. Terminal 5 was open.

    I’m struggling to understand the Kitfox drawings, the existing wiring in the plane, and the new installation instructions for a 912 ULS.

    I’m ok with the L and R mag wires being shorted to ground with the ignition in off position, but are these also the two brown wires that deliver 12v to Module A & B (I think pin 5). I can easily understand pulling the hot signal off of the starter solenoid to supply power to the (violet) wire for Soft start - now called easy start.

    Help please?

  3. #43
    Senior Member jrevens's Avatar
    Join Date
    Aug 2009
    Location
    Arvada, CO
    Posts
    2,146

    Default Re: Key Ignition vs. Toggle Switches

    I’m not close to the airplane or my wiring diagrams, but will just say that other than the 12v. signal from the start solenoid coil for the easy start function (which you seem to be clear about), there is no power supply to the modules from the ship’s power at the panel. The modules are powered directly from a dedicated coil section on the engine’s “dynamo”. That wiring is already installed on the engine by Rotax.
    John Evens
    Arvada, CO
    Kitfox SS7 N27JE
    EAA Lifetime
    Chap. 43 honorary Lifetime

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