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Thread: Relay for CDI to M Unit.

  1. #11
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    May 2015
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    Following from the M unit’s ignition output terminal, where That wire connect to?

    And how are you toggling the M unit to get it to power up its ignition output terminal?
    1980 GS750E (bought used June,1983)
    1968 CB350 Super Sport (bought new Oct,1968)
    1962 CA77 305 Dream (bought used Feb,1963)

  2. #12
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    May 2021
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    Quote Originally Posted by pdqford View Post
    Are you using the start button to start the engine?
    And double pushing the start button to shut the engine down?
    yeah that was my plan, I still have to configure the m unit. Or would having a separate button as a kill switch be better?

  3. #13
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    May 2021
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    California
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    Quote Originally Posted by pdqford View Post
    Following from the M unit’s ignition output terminal, where That wire connect to?

    And how are you toggling the M unit to get it to power up its ignition output terminal?
    i have the ignition wired to the B/W wire of the ignitor.

  4. #14
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    May 2021
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    California
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    Is 300ohms resistance on the pickup bad? The owners manual says 130-200, anything under 130 is bad, but is being over at 300 bad?

  5. #15
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    May 2015
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    Quote Originally Posted by Bulldozaaa View Post
    i have the ignition wired to the B/W wire of the ignitor.
    So you have the ignition output terminal of the M unit going to the B/W of the ignitor?
    That B/W wire is the GROUND for the ignitor!
    (Maybe someone smarter than me can tell you if that would cook your ignitor?)

    How are you telling the M unit to turn on its ignition output?
    Has it ever sent power to the B/W wire of the ignitor?

    If the M unit’s ignition output terminal is connected to that B/W wire to the ignitor, How are you powering your ignition coils?
    1980 GS750E (bought used June,1983)
    1968 CB350 Super Sport (bought new Oct,1968)
    1962 CA77 305 Dream (bought used Feb,1963)

  6. #16
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    May 2021
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    California
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    Oh crap sorry I meant the B/Y wire. I double checked the color wire diagram and just realized I said the wrong color. So itís basically the 2 yellow that goes into the kill switch, the B/W is the ground and the B/Y is to the black of the ignitor. I would probably need the kill switch huh? This might be a dumb question, but if I have a kill switch also a momentary button, wouldnt it never be on unless I hit the button? Cause the stock handlebar switch is off/on right? I bought a used pick up for cheap that just came home, Iíll install that and let you know how it goes. Iím about done to call it quits with this bike haha. Went from 0 knowledge to pretty close to decent in 2 months. Took apart everything cause I had no choice. Just not the main motors components.

  7. #17
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    Quote Originally Posted by Bulldozaaa View Post
    yeah that was my plan, I still have to configure the m unit. Or would having a separate button as a kill switch be better?
    You need to check the M-unit programming - is it in pushbutton mode or conventional switch mode.
    That's why i advised you to check the control lights on the m-unit so you can verify functionality.

  8. #18
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    May 2019
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    squamish B.C canada
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    Hi, with m-unit it is much simpler and easier to just use 5 momentary push buttons. No relay or kill switch is needed, just hit the start button twice to kill the engine. If you are going to the trouble of changing all the wire and installing a m-unit, it makes no sense to reuse old switches or anything. Remember all inputs are just dry contacts to ground with the exception of ignition which is + 12 v to igniter. I think you might be over thinking this.
    1983 gs1100ed restro-mod. 1998 gsxr 1100 almost mint, 2019 kawasaki klx250, 2011 Beta 250 evo trials bike, 2017 Montesa 300rr trials bike, 2021 honda crf250rx woods weapon

  9. #19
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    Feb 2014
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    Quote Originally Posted by chris View Post
    Hi, with m-unit it is much simpler and easier to just use 5 momentary push buttons. No relay or kill switch is needed, just hit the start button twice to kill the engine. If you are going to the trouble of changing all the wire and installing a m-unit, it makes no sense to reuse old switches or anything.
    I did - just because i wanted to keep the conventional/classic looks ...

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