I actually converted my front parking/turn signal lights into HID running lights, so I had to do this mod in additon to mounting new turn signals (led signals hidden at the bottom of my valance), and modifying the original housings to accept the HID bulb. IMO, it looks pretty bad-*** driving around with the HID fogs on.
On the Charger, the parking lights turned off when the heads turned on, but they also functioned as turn signals.