A GUESS WOULD BE IF IT HAS A BARE POSITIVE SOMEWHERE IT COULD BE SHORTING WITH ANOTHER WIRE OR THE BODY.OR THERE TAKING A BIG POWER DRAW WITCH SOUNDS LIKE A REGULATOR.THIS INFORMATION IS NOT GUARANTEED SIGNED A GUY WITH A 1999 SUNFIRE THAT HAS A DAY TIME RUNNING LIGHT PROBLEM F235
faulty wiring or you are accidentally hitting the switch and not realizing it
This is a wiring issue. If the switch were the issue, the light would not turn on at all. Sounds like something is wired backwards, or there is a cross short. If there is a short to ground, you will be blowing fuses and possibly burning up relays. Consult your vehicle's wiring diagram to ensure the aftermarket headlights are wired correctly.
I would check the fuses. if all fuses look okay then check the wiring. if the wiring looks fine i would recommend taking it to a shop.
blow fuse, bad motor, bad switch or wiring
iT CAN BE WIRING OR BAD HEADLIGHT SWITCH.
Check bulbs, fuses, and check for wiring problems
If the headlights flash on and off, there may be a problem with the bulbs or fuses. There may also be a problem with the battery connections or wiring.
It is probably the running lights that are working and the regular headlights aren't working because of the switch or wiring. TAke it to a garage.
Blown fuse and/or damaged wiring loom.
bad ground or wire connection somewhere could be shorted too or bad headlight if its immediate would say wiring trydisconecting plugs from headlights and see what happens
i would check the wiring for cracks
A shot circuit in your wiring loom. You need to get this fixed, if you do not you could end up with an electrical fire in your car.