No switch with this. If you want to do it as the DRL mod, google, there are a couple of How To's on the site. For YOU. Like me, Canada has the DRL to contend with. I have a 94 so i was able to pull out the DRL relay under the hood and voila, with the harness, I have HID DRL with the flick of a switch. Switch being the headlight switch to flip on the indicators.