SL175 stator in a CB160
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Thread: SL175 stator in a CB160

  1. #1
    Senior Member amannl's Avatar
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    SL175 stator in a CB160

    The original cloth covered stator in my CB160 died (2 of the 3 legs are “open” and I couldn’t find the break) so I bought a stator from a 1971 SL175.
    The 160 harness has female bullets, whereas the 175 has a square female plug. I want to cut the plug off and solder in male bullets, but the 3 stator cloth-covered wines are all white.

    How can I identify which of the wires to connect to the pink, yellow, and brown wires in my harness?
    The readings from the stator are:
    1-2: 2.4 ohms
    1-3: 2.1 ohms
    2-3: 1.0 ohms

    Thanks,
    Adam

  2. #2
    Sensei 66Sprint's Avatar
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    Based on the schematic, the least resistance is between Brown and Pink ..... So those associate with wire #2 and #3......This determines the original color of wire #1 (and will connect to on the 160 harness) is Yellow.......
    The highest resistance will be between Yellow and Pink......So that tells us wire #1 and #2...We already know Yellow is #1, so #2 must be (160) Pink....Therefore, Brown is #3....
    Our verification is that Brown would also be one of the connections on the "middle" resistance pair, and that is true......

    I did the math figuring every pair possibility as to total resistances......If anyone wishes to check my computations or method, please ask...I'll gladly post my crib sheet......
    Last edited by 66Sprint; 05-10-2019 at 09:54 PM.
    chaindrivecharlie likes this.
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  3. #3
    Senior Member amannl's Avatar
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    Steve,
    i NEVER would have figured this out so many, many thanks!

    With a slightly increased output from the stator I’m planning to add a rectifier/regulator unit, so I’ll maybe have a question later. This addition might be overkill but why chance overcharging and ruining a battery? Not that I think it likely to happen.
    thank you, again

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  5. #4
    Sensei 66Sprint's Avatar
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    Good idea....Honda added a regulator on the 175's whereas the 160 used only the rectifier........
    chaindrivecharlie likes this.
    "I have a mind like a steel trap.....Old and rusty, of antiquated design, and hard to get stuff back out of...."
    Contact info: E-mail; [email protected] Phone; 540-525-5199

  6. #5
    Senior Member amannl's Avatar
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    I bought a rectifier/regulator on eBay. It has four wires: red, green and 2 yellows. I’ll be removing the plug and plugging the wires separately into the harness.
    Is it safe to assume the green is ground, red is output to battery and the 2 yellow are ac input from the stator?
    Or, how can I test it to be sure?
    Thanks,
    Adam
    SL175 stator in a CB160-650bda69-4460-4bc7-9c49-b6a11c3fa948.jpg
    Last edited by amannl; 05-23-2019 at 03:57 PM. Reason: Spelling

  7. #6
    Sensei 66Sprint's Avatar
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    That's a reasonably safe assumption as that coding is pretty widely used..... If it is indeed a rectifier/regulator, readings across wire pairs would vary from expectation due to the internally connected regulator section (which itself contains solid state components similar to what you would be trying to read) that will effect reading discrepancies........So testing that is a wasted effort.....
    You CAN test for DC output and a particular voltage limit once installed with engine running.....
    Last edited by 66Sprint; 05-23-2019 at 04:21 PM.
    chaindrivecharlie likes this.
    "I have a mind like a steel trap.....Old and rusty, of antiquated design, and hard to get stuff back out of...."
    Contact info: E-mail; [email protected] Phone; 540-525-5199

  8. #7
    Senior Member amannl's Avatar
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    Steve, Many Thanks, again.
    I’d have a whole lot more trouble without your help.
    chaindrivecharlie likes this.

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