3 - way connector fits the standard power outlet is found under the dash.
 
It is highly recommended to use a relay if you want to install additional lights from the blue wire, it is only for signal! (This connection is with a plug, use something sharp to remove)

Keep in mind that after turning the switch to the accessory position, the motorcycle system supplies 12VDC!

There may be a blanking plug over the power outlet, just remove and use this one once you have wired up.

BLUE - 12VDC high beam ON

RED -  12VDC ACC (switched power)

BLACK - ground 

Fits:
CB500X/F/R