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Old secret 1940 Dodge would not start but push it 1 foot fired right up . New coil , starter ,battery, everything no start . 90 year old guy says to me clean your amp gauge studs and wires and it fired right up !



All the battery power goes through the amp gauge. Poor connections there will rob the system of amperage. You can't afford to loose amperage on a 6 volt system. Might also want to do a load test on the battery, just to be sure its up to the task.

All that said, nothing cures these problems better then converting to a 12 volt system. Gene