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#292430
JACQUES
Participant

    I suspect the  ground wire on the mercury switch (glob) would either read  full 12v …..with  the switch being OPEN and  being the highest resistance point in the series cct  back to the solenoid and START key position  (ohms law).

    or  would read 0 volts  as it becomes the ground referrence.   for the coil when the switch  closes to grd.

     

    needs to be tested I guess.

     

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