How to Convert a 6-volt Stator to 12-volt
Earlier motorcycles were often fitted with 6 Volt, 3 phase stators. These can easily be converted to a 12 Volt, single phase stator. All it takes is a simple wiring modification.
Motorcycle fitted with stators like the Lucas 47204, or the Lucas 47194, typically have 6V coils. Each coil is arranged in a three-phase star format.
Two of these phases are joined together during manufacture. This then created just two separate AC output supplies. Historically called the high and low outputs.
A third wire was then provided as a neutral or ground. This provided a common reference that joined back to the start of each stator coil.
By combining the high and low 6V supplies, you can create a 12V supply. This new 12-volt supply has enough power to run a modern 12V regulator rectifier.
Step by Step Stator Conversion Guide
To converter classic high and low output stators to 12 volts follow these simple steps:
- Convert all electrical parts to 12V DC including the battery and all lighting
- Connect the Green/Yellow and Green/Black wires together. This is now the live AC supply for your 12V regulator rectifier (AC1)
- The Green/White is your other AC wire and is the neutral/ground (AC2)
- Connect AC1 & AC2 to your regulator rectifier
For further help check out the following electrical schematic.
Stator Voltage Conversion Wiring Diagram PDF
Wiring diagrams can be large files. Please be patient while the file loads.
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