taco eater :
rambunctious_rockhound from oh-eye-oh
This is a "voltage dumper" style of regulator. You wire the yellow wire to the output of your light coil, and the brown wire to the frame ground.
When the voltage goes too high, it dumps the excess voltage automatically. It does this so quickly that the output stays relatively the same as the engine increases in speed.
If you have a basic moped, with a simple headlight wired directly to the coil, this will work really well.
THIS IS NOT A RECTIFIER, IT DOES NOT PRODUCE DC, IT WILL NOT WORK WITH A BATTERY, IT WILL NOT CHARGE YOUR PHONE!
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Voltage Regulator
February 24, 2022
taco eater :
Adam Rogers from versailles, KY United States
only two wires, no connectors included, the adjustable part has been covered so as to prevent me from adjusting. What the hell do, splice into the yellow wire to headlight and other to ground?
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So far so good
October 14, 2019
taco eater :
bigbadbrother from San Jose, CA United States
Be sure to use good connectors and hard mount it so its not shacking around
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Works as expected
July 1, 2019
taco eater :
Jonah Loshnowsky from Peru, IN United States
Spliced in another wire on the yellow one, because the tomos a35 has a 3 prong regulator, then soldered on some connectors. Everything worked great, although i never messed with the adjustable voltage screw. if it ever claps out ill rewrite my review, maybe.
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Nice
June 3, 2019
taco eater :
marc silverstein from bell canyon, CA United States
Works great. For those of you that want to run a battery in order to eliminate lights dimming at idle, use a heavy diode in line to the battery. You will need to change the horn to a DC horn.
Very basic, but does the job most of the time. 
Voltage Regulator