6 to 12 volt conversion

what needs to be changed when converting a car from 6 to 12 volt?

 

You'll need to change to 12 volt bulbs for sure. The 6 volt bulbs will work ok for about 5 sec. Still running my 6 volt wiper motor on 12 volts.

 

Aside from the obvious stuff like battery, reversed cables (if it was pos ground) and lightbulbs... you need a runtz voltage reducer on each of the gauges and a ceramic resistor on the blower motor. Also need your 12v charging source, so an alternator, or modified generator.

 

I am doing the same conversion and found a wide range of answers, but I know you need a 12v coil as well.

I haven't seen mention though about voltage regulator, fuel sending unit or headlight relay needing to be changed. Any body know about those?

 

Click on this it pretty much covers everything http://reviews.ebay.com/6-to-12-Volt-Conversion-1955-Ford?ugid=10000000001571127

 

What make/year?

Charlie Stephens

 

I followed this page when I did my '40 stake truck. http://www.oldengine.org/unfaq/six12.htm

 

You don't need to change the coil. Fuel sending unit is fine to.

 

Thank you for that....all 12 volt coils are actually 6 volt with a internal or external resistor.

 

http://www.oldengine.org/unfaq/six12.htm u need to read and print this

 

Thanks for all the replies guys. My car is a 49 mercury 4dr sedan. The 12volt conversion seems pretty easy compared to the steering modifications i'm into now. I will have to start a new thread for that one.