Check bulbs Check Fuses in Main junction box under hood
Headlights, interior lights, parking lights,Headlights, interior lights, parking lights,
it could be the headlight relay. if not it may be in the switch.
I would start with replacing the head light switch
Check the fuse for the headlights. It is probably open.
iT CAN BE WIRING OR BAD HEADLIGHT SWITCH.
if you've tried hitting the high/low beam switch & headlights are out on both, then a bad headlight switch or headlight switch plug or high/low beam switch plug not fully engaged.
Check fuse for parking/tailights Could be a bad headlight switch
The headlight switch may be at fault or the wiring has been altered.
There are three headlight settings on your headlight switch. You can turn the low beam headlights on by turning the headlight switch.
The headlights are a separate circuit from the others. Check the bulbs, headlight switch, Hi/Low beam switch and depending what year you have check the fuses.
Bad ground or bad switch
could be bad wiring