Honda Regulator / Rectifier Combo Replacement - CB550F / CB550K / CB500K
The charging systems on these old Hondas are not the best, and the weak points tend to be the outdated electronic components. The factory voltage regulator (limits total voltage to the battery) and rectifier (converts AC to DC) were not of the highest quality to begin with, and now after decades of use and abuse they're even worse off. We've managed to find an affordable drop-in Honda replacement regulator / rectifier combo kit. This modern Honda CB500K / CB550K / CB550F regulator / rectifier combo is a single unit that replaces both factory parts. This is the single best electrical upgrade you can do to your Honda next to our halogen H4 headlight.
Early CB500 K0 models use rare round-pin connectors for the stock rectifier, whereas later CB500K, CB550K, and CB550F models use the more common spade-style connectors. If you find these connectors when making the upgrade to our regulator / rectifier, purchase a replacement 6-pin connector from us and replace both the connector on the main harness and the one on the new regulator / rectifier. Additionally, the new connectors will no longer fit into the original mounting plate, as the spade-style connectors are longer than the original round-pin connectors.
This unit replaces both the factory regulator and rectifier. Depending on the bike you are working on, this unit can be mounted under the side cover with the rest of the electrical components. The original regulator and rectifier can be unplugged from the wiring harness and the new one simply connected. The black, white, and green wires connect where the voltage regulator was connected to the harness.
