Battery not charging? Might be time to replace your rectifier. Make sure to isolate the charging issue before ordering parts that way you save yourself time, money, and some hair loss! If you're just replacing all the electrical parts on the bike, this is a great replacement for the stock rectifier, it plugs right in with no modifications to the wiring harness. This rectifier is for motorcycles with three phase charging systems. There are 5 leads, 3AC and 2 DC. The rectifier receives AC power from the stator and converts it into DC power for the battery.

• You must have a fully charged battery in perfect working order before installing a new regulator rectifier.
• Replaces these Honda OEM part numbers: 31700-333-008, 31700-341-015
• Fits the following Honda motorcycles: CB350F - 1972-1974 (four cylinder) CB400F Super Sport - 1975-1977 CB500K - 1972-1973 (could be used on a '71 but the connector needs to be modified) CB550F Super Sport - 1975-1977 CB550K - 1974-1978 CB750A Hondamatic - 1976-1978 CB750F Super Sport - 1975-1978 CB750K - 1969-1978
• It has cooling fins on it, so be sure to install it where the old rectifier was or somewhere where there's adequate air flow. The washers included act as spacers to fit this unit where the original rectifier was. The unit says regulator rectifier on it, but it is a 12V rectifier.

You must have a fully charged battery in perfect working order before installing a new regulator rectifier.4into1