KEEP THE ORIGINAL 6 VOLT SYSTEM WITH YOUR  ENGINE SWAP 
1EA 6 VOLT REGULATOR RECTIFIER CONVERTS 12V CLONE ENGINES TO 6 VOLT (6v/reg/rec)
THIS LISTING IS FOR 1 EACH NEW 6_VOLT REGULATOR RECTIFIER CONVERTS_12V CLONE_ENGINES TO_6_VOLT!!
 
 KEEP_ORIGINAL LIGHTS_BATTERY  (6V_reg_rec) S1249
 
THIS WORKS EVEN IF THE PIGTAIL COMING FROM YOUR NEW ENGINE HAS 12V MARKED ON IT !!!!
 
WITH THIS YOU CAN DO AN ENGINE SWAP AND STILL KEEP THE ORIGINAL 6 VOLT LIGHTS HORN BATTERY AND WELL IT JUST MAKES THINGS EASIER!!
 
WITH THIS REGULATOR RECTIFIER YOUR BATTERY WILL STAY CHARGED MUCH MUCH BETTER THAN WITH THE ORIGINAL HONDA 6 VOLT SYSTEM,, AND THE HEAD LIGHT IS MUCH BRIGHTER TOO, AS THERE IS PLENTY OF JUICE EVEN AT IDLE WITH THE NEW TYPE STATOR THAT THE CLONES HAVE.
 
THIS ONE ITEM CONTROLS THE HEADLIGHT VOLTAGE (AC 6 VOLTS) TO KEEP THE HEADLIGHT FROM BURNING OUT,, AND IT GIVES THE BATTERY PLENTY OF 6 VOLT DC TO KEEP IT FULLY CHARGED AT ALL TIMES..
 
YOU WILL WANT OUR ADAPTOR PIGTAIL TO GO WITH THIS.  SEE THE 2ND AND 3RD PICTURES- IT IS OUR PART S1255 
NOTE!! JUST FYI FOR THE SUB HARNESS IF YOU GET ONE-  the yellow wire coming out of the reg/rec never has it's own power,,
it just "T's" into the yellow wire that comes from the engine's stator wire, that then goes to the headlight dimmer switch.
it takes excess voltage and delivers it back to ground. thus the regulator part of the regulator/rectifier.
 
ALSO RECCOMENDED IS OUR SUB HARNESS- SEE THE 4TH PICTURE- PART# S1258 FOR THE HEADLIGHT WIRING