Motogadget M-Unit & Ricks Regulator/Rectifier Help
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Motogadget M-Unit & Ricks Regulator/Rectifier Help

This is a discussion on Motogadget M-Unit & Ricks Regulator/Rectifier Help within the Technical forums, part of the Caferacer.net Forums category; So i have a '75 CB750K5 and i just recently purchased a motogadget m-unit and ricks regulator/rectifier combo. I have most of the bike wired, ...

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  1. #1
    Junior Member Rusty_Gold's Avatar
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    Motogadget M-Unit & Ricks Regulator/Rectifier Help

    So i have a '75 CB750K5 and i just recently purchased a motogadget m-unit and ricks regulator/rectifier combo. I have most of the bike wired, all the lights and buttons work, now I'm moving onto the starter/charging system. Im a bit confused about how to wire the reg/rec, I know the black cable goes in with lock, but I have 7 other wires I'm not sure where they go, 3 yellow, 1 red, 2 green (each are a different gauge wire) and 1 white, any help would be greatly appreciated so i can get this thing on the road, thanks!

  2. #2
    Senior Member Ichiban Moto's Avatar
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    two green?> post the schematic diagram that came with the reg/rec

    ( I need to make a video my bad ass charging system mods )

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  3. #3
    Banned Witworth's Avatar
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    Email the manufacturer for setup advice.

    Danger, is my business."

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  5. #4
    Senior Member hillsy's Avatar
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    The Motogadget unit is not used for the charging system.


  6. #5
    Senior Member parkwood60's Avatar
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    Did you not buy the Rick reg/rec that is specifically for the CB750? Those are supposed to be plug and play. For most other units the early Honda charging system switches the field coil on and off with the power wire, while modern regulators switch the ground side. As mentioned earlier I would email Ricks and see which one you have. Otherwise hook the wires to the Honda wires of the same color. The 3 yellows go to the stator windings, the one green is frame ground, the other goes to the field coil, the other white goes to the field coil, and the red goes to battery plus, if I recall correctly.

    You can save lots of money next time by just buying a 1979 CB750 reg/rec and changing 1 wire.

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    Whitworth - The whole Western World economy runs on total lies and BS: I'm a part of the action.

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