DIMMER SWITCH FAILURE.
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.
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.
The parking lights on a two-door 1990 Acura Integra hatchback are located in between the headlights and the blinker lights. Replacement requires a size 3652 parking light bulb.
iT CAN BE WIRING OR BAD HEADLIGHT SWITCH.
Check fuse for parking/tailights Could be a bad headlight switch
I would start with replacing the head light switch
The headlight switch may be at fault or the wiring has been altered.
Bad ground or bad switch
the headlight switch is bad buy a new one it would fix your problem..
If parking and tailights are working could be headlight switch--rheostat for dimming control could be bad