Espirit is right, but I never used no relay for my HIDs. Basically I plugged everything where it supposed to go (just plug and play config.) except I didn't use low beam ground, I grounded it to the frame of the car.
Going back to original H7 bulbs is really simple, just take all HID components and put the OEM bulbs back in place.
Going back to original H7 bulbs is really simple, just take all HID components and put the OEM bulbs back in place.