You can hook them up to about anything. One of my friends has them hooked up to his brake light and another has them hooked up to his headlights. i jus got a switch though. Much safer so then i dont get the cops on my ass.
1998 Ford Contour Sport Neons Throughout-17 Inch Rims on 215-40R17 Yokohamas-Wings West Touring Wing-Performance Muffler-12" Crossfire Subs-Crossfire Mids and Highs-800 Watt Crossfire Amp