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Thread: 1979 ATC70 with no wiring harness. I am an electrical dummy. could use some help.

  1. #1
    Join Date
    Mar 2015
    Location
    ca
    --
    1

    1979 ATC70 with no wiring harness. I am an electrical dummy. could use some help.

    As stated in the title. I bought a 1979 atc70, which is missing everything wiring wise, except the sparkplug/coil and the stator with the white plastic 4 wire plug (1 black felt covered wire, 1 white, 1 blue, and 1 green).

    At the risk of sounding like a tool, I will admit that wiring and all things electrical make my head spin. I have a deep seeded mental block with anything electrical. I tried looking at the official wiring diagrams for the atc70 wiring and started getting brain lock.

    All I want to do is wire this thing so i can get it running, even without a kill switch. I fully plan do the wiring system correctly once I can confirm this thing will run. I am hoping that with someones guidance I can start to get a grasp of how this simple system works and will tip toe me into understanding wiring systems a little more (baby steps). I want this bike to run first and foremost, but eventually i want an understanding of how it all works. I tried searching for something at my level, and came up empty (nothing at a 5 year olds level i guess, heh)

    If someone could tell me what I am asking is possible and which wires to connect to the coil and which to connect to a ground to make this thing fire, you will be my ATC hero! I can provide pictures if needed.

    P.S. I tried posting this to the technical section and could not find a 'post' button. So I posted here as a last resort.

    Thank you kindly

  2. #2
    Join Date
    Jun 2010
    Location
    Cold Lake, Alberta, Canada
    --
    3,001
    IDK if anyone could explain anything short of providing you with a wiring diagram unfortunately. It sounds as if your kill switch is out of the picture so that's one thing to not worry about. Let me snoop around but my gut feeling is that it should run with one wire hooked up to the points/condenser. Check the link below

    http://www.3wheelerworld.com/showthr...ighlight=bench
    Last edited by coolpool; 03-23-2019 at 08:24 PM.
    Trikes
    1970/71 US 90 (Aquarius Blue)
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    1972/73 US 90 Camo Project (110 Big Bore)
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    1977 ATC 90 w/83 110 motor (Fugly)
    1982 ATC 70
    1983 ATC 70 (Ladybug)
    1973 ATC 70

    1965 Marketeer 3 Wheel Golf Cart with 1986 Honda 250 drivetrain

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  3. #3
    Join Date
    Jul 2009
    Location
    South Florida
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    6,722
    Black wire from the stator connects to the hot side of the coil , that’s all you need to get spark . The other wires coming from the stator are optional for lights .
    Very simple just one wire .
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