To make it easier for you to find a regulator for a motorcycle with an AC generator, we give you the following instructions.

1. Determine what type of generator you have and how much power it has:

• A generator with two identical wires is single-phase - continuation (2).
• The generator with 3 identical wires (yellow) is most likely three-phase - continuation  (3).
• Generator with two identical wires + red wire is double monophase - continuation (4).

2. Single-phase generator:

• None of the two wires must have a connection with the housing (unless the minus is connected to the generator housing - green).
• If you have another consumer on the same wires (e.g. choke), the replacement regulator must be functionally the same, and it is necessary to know what type the original regulator is (most often it is parallel - when tested, it seems as if it is an ordinary Gretz of 4 diodes). Contact us to determine a replacement regulator. We also make parallel regulators for exceptional cases when a serial regulator must not be used (eg 14V-1FP-15A-A for GEELY JL150T scooter).
• By measuring the maximum voltage (witout regulator) at the maximum rpm, choose the version up to 100VAC or up to 200VAC.
• The required current can be deduced from the thickness of the wires. Up to 1.5mm2 thickness is 15A, and above 30A (25A).
• So up to 100VAC for 15A you need a 14V-1F-15A-B regulator, for 30A you need  a 14V-1F-30A-B (not offered) regulator and up to 200VAC for 30A you need  a 14V-1FHV-30A-B regulator.
• If the motorcycle has such an installation that the lights work only when the engine is running, then contact us to determine a replacement regulator. Such a regulator often has more than 5 wires. A normal regulator has 4 or 5 wires
  
  

3. Three-phase generator:

• None of the 3 wires must be connected to the housing.
• The required current can be deduced from the thickness of the wires. Up to 1.5mm2 is 15A, and above 30A (25A).
• If the motor exceeds 8000 rpm, then a 14V-3FHVSP-30A-AX regulator should be used, otherwise 14V-3F-15A-B for 15A or 14V-3FHV-30A-B for 30A is sufficient .
• In order to distribute the current, some regulators have 7 (8 if it is also a contact) wires because they use double wires to the minus and plus pole of the battery. It is normal to have 5 or 6 wires when using contact.
  
  

4. Double single-phase generator:

• None of the two wires must have a connection with the housing.
• The voltage from red to any other is the same, and the voltage between wires of the same color is double.
• If you have another consumer on the same wires (e.g. choke), the replacement regulator must be functionally the same, and it is necessary to know what type the original regulator is (most often it is parallel - when tested, it seems as if it is an ordinary bridge of 4 diodes). Contact us to determine a replacement regulator.
• By measuring the maximum voltage at the maximum rpm, choose the version up to 100VAC or up to 200VAC.
• The required current can be deduced from the thickness of the wires. Up to 1.5mm2 thickness is 15A, and above 30A (25A).
• So up to 100VAC for 15A you need  a 14V-1+1F-15A-B regulator, and for 30A you need  a 14V-1+1F-30A-B regulator and up to 200VAC for 30A you need  a 14V-1+1FHV-30A-B regulator.

5. Warning:

• If the wires from the generator (battery charging part) are used for some other devices on the motorcycle, then the replacement regulator must be functionally of the same type as the original (parallel, series, mosfet, ..). By connecting a series regulator to such an installation, you can cause the burning of additional devices that are connected to the same coils (eg choke heater, tachometer, ...).
• A regulator with a higher current can always be used, but where a stronger regulator is needed, a regulator with a lower current must not be installed. For example 14V-3F-30A-B replaces 14V-3F-15A-B.
• 14V-3FSPHV-30A-AX/BX (series-parallel 30A) can replace 14V-3F-30A-B and 14V-3F-15A-B regulators.