You should have a relay in the wiring harness. Your switch should control the relay which in turn acts as a switch for the lights. The idea is to reduce the power going thru the switch on your handlebars. If you attach the trigger (power) wire to a switched power source on the bike, then the lights will turn off when you turn the ignition off. Not a good idea to power the lights off the battery without a switched relay installed; too easy to leave the lights on and run down the battery. Even better is to draw power for your trigger wire off the high beam circuit. That way your high beam switch will also turn the lights on/off.