johnson jolt

Discussion in 'Technical Help' started by Martyb1202, May 29, 2016.

  1. Martyb1202

    Martyb1202 New Member

    May 15, 2016
    0
    1
    fife
    Hi, does anyone have a wiring diagram for the jolt method of bringing the voltage up at the coils during start from cold. Have all the bits n pieces, just need to know how it all goes. Thanks, Martin
     
  2. thebiglad

    thebiglad Old fart, still riding !

    Sep 25, 2013
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    Sorry Marty but have absolutely no idea what you're talking about - but it sounds interesting.

    Can you give us more info about what it is and what bikes does it apply to?
     
  3. crispey

    crispey crispey creme de la creme

    Nov 6, 2014
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    Ditto the above
     
  4. Shamus13

    Shamus13 Well-Known Member

    Apr 18, 2016
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    East Riding of Yorkshire, UK
    Never heard of it but it does sound painful.
     
  5. Martyb1202

    Martyb1202 New Member

    May 15, 2016
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    1
    fife
    I was looking about on another triumph forum and apparently its a common fault, the voltage drop to the coils on cold startup, but after a bit of digging and some more looking about the solution is feeding a supply to positive terminal on coils that activates with the starter, and my hastily prepared wiring diagram shows how its done

    IMG_20160529_104140.jpg
     
  6. crispey

    crispey crispey creme de la creme

    Nov 6, 2014
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    Would an easy start headlight control module acheive a similar purpose?
     
  7. Martyb1202

    Martyb1202 New Member

    May 15, 2016
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    1
    fife
    It might.....the principle is to effectively bypass or as if you are connecting jump leads to give the coils a boost when cold starting . The loom has something like 27 crimped connections between battery and eventually the coils and with age it creates a voltage drop of between 2 and 5 volts which cant be helpful at all. I assume you mean using the module to produce tbe power boost to the coils?
     
  8. crispey

    crispey crispey creme de la creme

    Nov 6, 2014
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    This stops the battery drain to the headlights, effectively giving more oomph to the starter motor.
     
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  9. Rooster

    Rooster Grumpy Member
    Subscriber

    Sep 14, 2015
    1,655
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    Droitwich, Worcestershire
    My Johnson could do with a jolt.
     
  10. thebiglad

    thebiglad Old fart, still riding !

    Sep 25, 2013
    5,066
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    Central France
    There's always one........................................................
     
    • Like Like x 1
  11. GaryM

    GaryM It's him, you know who. Him from you know ....

    Apr 28, 2016
    862
    500
    Patna , Ayrshire
    More like two smutty minds "........
     
  12. steve lovatt

    steve lovatt Something else

    May 12, 2014
    9,218
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    North Yorkshire
    Only one?
     

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