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Changing from 6 Volt to 12 Volt System
                       article from  Ron Francis Wiring 


BULBS     All bulbs must be changed to 12 volt. RON FRANCIS WIRING has bulbs available in higher candlepower  for brighter and safer illumination. We carry most applications for exterior lights. This includes SUPER BRITE HEADLIGHT BULBS for vehicles older than 1940.

6 VOLT GAUGES
If you are keeping original gauges, you need a VR-1 electronic voltage reducer listed on this page.
Mechanical gauges only need 12 volt bulbs. You must use the original sender with the old gauge(s).
REVERSED POLARITY
Reversed polarity is not a problem. We have never seen a 6 volt gauge that you could not simply hook up to our reducer and be fine.

6 VOLT HEATER AND WIPERS

Heaters need our VR-4 unit is capable of handling 15 a amp load. Sorry, we have never been able to find any records of what your unit draws. Our supplier does not accept returns on these voltage reducers. Wiper motors hardly seem worth a voltage reducer. Replacement 12 volt units are easily available.

6 VOLT RADIOS AND CLOCKS

Radios can be fun. Positive ground radios are impossible to use. Clocks usually respond well to the voltage reducers, except accuracy is marginal.

CONVERTING THE ORIGINAL ENGINE

The six volt starter can stay. Install the new 12 volt battery and solenoid. This might shorten the
starter’s life some but not enough to notice. Update your distributor by using a 12 volt coil and condenser from a mid-60's GM engine. The points themselves just need new ones for maximum life.

ORIGINAL ENGINE NOW, BUT PLANNING A SWAP IN THE FUTURE?
Convert the original motor to an alternator now. Use the model you want on the new engine. We can
help with this. Just leave slack in the wires to the engine components for adjustment after the new
engine is in place. RON FRANCIS WIRING does not recommend the use of a generator even after
swapping for a 12 volt model. Brackets are available to allow a GM integral alternator to mount and adjust on a flathead.

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