How do you change from 6volt to 12 volt on my67 beetle?

Answer 1

You replace all of these things:

the generator, and most people change to alternator

every light bulb in the car

the battery

the voltage regulator

the coil

both the crank and alternator pulleys--the belts are different--and the fan belt

the radio

You also install a voltage drop on the carburetor--it goes between the coil and the carb.

Most guys leave the starter alone. Six-volt starters work well on 12v power, and if you were to change the starter you'd also have to pull the engine and change the flywheel, which is larger on a 12v car. And then you'd have to machine the bellhousing on the transaxle to handle the larger flywheel...save yourself a lot of grief and leave the starter alone.

Actually a 67 is 12 volt already, that is the year they changed. But the advice given was good, I would leave the starter alone.

Answer 2

To convert a 6-volt system to a 12-volt system on a '67 Beetle, you will need to replace the battery, generator or alternator, voltage regulator, light bulbs, and possibly the ignition coil and starter. It is recommended to follow a conversion guide or seek the help of a professional mechanic to ensure the conversion is done correctly and safely.