Have a 6-volt charging system and thinking about upgrading to a 12 volt system, but not sure? Then this is your solution. This is a 6-volt Regulator Rectifier that you can be switched over to 12 volts! This improved regulator rectifier offers a output voltage of 7.5 volts (6-volt operation) and 200 watts, which is approximately 14 amps. We recommend using only lead-acid batteries instead of Lithium-ion batteries. Lithium-ion batteries do not accept overcharge or either excessive current when charged or continued charging when fully charged. This can result in serious damage to the battery and consequential damage to the regulator rectifier, worst case the battery can catch fire or even explode. This RR has 2 stator inputs and 1 negative and 1 positive battery output. ( The blue looped wire will not be used) Wires: Yellow wires: Alternator Black wire: Negative Output Red wire: Positive Output Mounting holes from center to center: 58mm Slot size: length 12mm width 6.8 mm