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  1. #1

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    Default Wiring issue on my '73 Ironhead

    I have a 1973 Ironhead that I've started to rewire my issue is my Bendix and starter motor is bad how would I wire it up just to use the Kickstar can anybody draw me out a diagram or point something website out that can help me out it's also running electronic ignition

  2. #2
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    2013 Thread: lookin for simplified wiring diagram 73 ironhead
    http://www.chopcult.com/forum/showthread.php?t=34203


    Ironhead - Simplified Wiring Schematics

    This wiring diagram is a minimal config - No Starter - No Turn Signals - No Front Brake Switch - No Kill Switch.

    The ignition module is an Ultima version and fits in the nosecone where previously only the cam sensor plate was mounted. In this diagram the Ultima Single-Fire Configuration is used, feeding separate trigger signals to the dual coils to fire the front & rear spark plugs separately (the Ultima BLUE wire fires the front coil & the Ultima PINK wire fires the rear coil).

    If you choose to use a dual-fire configuration of the Ultima ignition, it will also work when you pair it to the appropriate dual-fire coil. In that case, you will only use the Ultima PINK wire to fire the selected dual-fire coil. (The Ultima BLUE wire will not be used at all with a dual-fire version.)

    Using the VOES connection with either configuration (which helps with idle & cruising spark timing by providing more advance) is recommended by connecting the Ultima VIOLET wire to the VOES unit.

    Implementing a tachometer is optional. If used, the Ultima GREEN wire will connect to the tachometer signal input wire. The tach will also need a ground connection on the bike and key-operated power for the tach light.

    There are only six wire colors to minimize wire purchase: Black - White - Red - Blue - Yellow - Green. There are enough colors so that no connecting point should have the same color twice in order to make it easier to know which device is connected to/from another device.

    This circuit uses the Frame/Engine for ground conduction. Be sure you have good ground points at the needed locations or run a separate black wire to those locations to assure a good ground.

    Beware that the brake light shares the same fuse as the ignition circuit - So, if you have a short to ground in the brake circuit it will blow the fuse & kill the ignition. You could add a separate fuse for the brake light to avoid that potential problem.

    The diagram shows an optional Gen Light, implemented with a diode and an incandescent bulb.

    To implement the VOES, add it with a vacuum hose to the carb - then wire the single VOES wire into the Violet Wire of the Ultima ignition module.

    To implement a tachometer, use a normal HD dual-fire tach and wire the input signal to the Green Wire of the Ultima module

    http://sportsterpedia.com/doku.php/techtalk:ref:elec07


    Ironhead Sportster Motorcycle Talk (1957-1985)
    Ironhead wiring diagram for idiots.

    http://xlforum.net/forums/showthread.php?t=1780860

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    You need a service manual for your bike. Google the Carl Salter website, and you can probably download one from there.

    The use the diagram to pare back what you won't be using.


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    sportsterpedia link above ^^^ has stock wiring diagrams for '59 - '85, plus simplified wiring diagrams.

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