[bfuller9999]

The 3 yellow wires do not affect how the bike runs per se BUT does affect how well your battery stays charged eventually affecting it ability to run. The three wires produce AC voltage to the rectifier which in turns produces the 12+ volts for you electrical system. If one wire is disconnected , you will be push starting it soon and replacing a battery unless the problem is corrected. Check your voltage to the battery at about 3000 RPM, it will be less than 13.2 Volts, and your battery is dying. You will be stranded soon.