Re: 1956 Johnson 30HP internal wiring harness advice needed..

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March 21, 2017 at 12:39 am #54635
ADAM GIBB
Participant

    Canada Member

    When the mercury switch is creating a path to ground at low throttle, it allows the start button to complete the circuit that triggers the starter solenoid. It won’t work if the mercury switch is bad or missing. Ground that lead and see if anything changes.