I would start with replacing the head light switch
Headlights, interior lights, parking lights,Headlights, interior lights, parking lights,
The headlights work on a totally different relay than the parking and fog lights. The headlight relay or headlight fuse is usually blown when only the parking and fog lights work.
it could be the headlight relay. if not it may be in the switch.
iT CAN BE WIRING OR BAD HEADLIGHT SWITCH.
Turn the headlights on the whole way, then push the headlight knob back in, leaving the parking lights still lit. This will hold the headlights up, without having them turned on.
Check fuse for parking/tailights Could be a bad headlight switch
behind the headlight
The parking light is in the headlight assy.
The headlight switch may be at fault or the wiring has been altered.
behind the headlight
Bad ground or bad switch
behind the headlight