What size fuse do I need for my Honda CB550K / CB550F / CB500K? December 17, 2018 05:54 One 15A fuse Main (All models) Two 7A fuses Head & Tail (All models) http://www.common-motor.com/honda-glass-fuses-15a http://www.common-motor.com/honda-360-500-glass-fuses-7a Related articles Honda CB500 and CB550 4-Cylinder Factory Service Manuals The Three Fuse Headlight and Running Light Circuit (Post 1974 Late Style): Electrical Troubleshooting and Basics on a Vintage Honda Motorcycle What spark plug do I need for my CB550K / CB550F / CB500K? The Late Electric Starter Safety Switch Circuit (Post 1974): Electrical Troubleshooting and Basics on a Vintage Honda Motorcycle How to adjust the cam chain and valves on the Honda CB500K / CB550