The headlights on my 2002 Ford Focus ZTS will not shut off, I replaced the $90.00 switch with no results. Any Ideas? The lights stay on well after the switch has been turned to off and sometimes kick on at their own regard. This occurs both when the car is on and off. Thus resulting in numerous dead batteries and my 7 months pregnant wife being stranded. Could this be the relays, ground wire, short, headlight?