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How do i change a 6 volt system to a 12 volt system on a 1948 dodge pickup

I want to change a 1948 dodge pickup to a 12 volt electric system?

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Voltage conversion necessitates the replacement of all 6 volt light bulbs and motors with 12 volt light bulbs and motors (including the starter), plus the addition of a ballast resistor to the ignition primary so that the ignition primary can continue to operate on 6 volts. You will need to refit a 12 volt starter solenoid, alternator, and regulator to the vehicle as well. Needless to point out that you will also need to replace the radio. You can use the original wiring if it is in good condition, and all switches should operate adequately as long as their insulators are still intact. The 12 volt system uses less current than the 6 volt system, so there should be no problem with wire gauge.
IMPORTANT: If the original system is POSITIVE GROUND instead of NEGATIVE GROUND, you will need to verify the polarity of all motors you replace, plus reverse the polarity of the ignition coil primary.

Posted on Jun 11, 2014

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