yeh im not sure if its 14v, but based of wat im guessing. sorry ima noob at electricity haha umm the reason why i hooked them up straight to parkers instead of a seperate switch is that i dont hav to twiggle around with to much when im driving, so much simpler. also another benefit of it is if i have the headlights on auto, they can dim down themselves when u go into a tunnel and stuff. down side is if i leave it on auto, if when i start the car, theres a huge electric pulse, its like starting the car with headlights on, its like struggling to turn on and that can ruin the leds.