Your parking lights may not be working due to a blown bulb or fuse. If you have checked both you may need to see a mechanic to make sure there is not any electrical problems.
If all other lights work then make sure that the parking light bulbs are good. Check for a parking light fuse and relay, to insure that the work properly.
I would start with replacing the head light switch
Check to see if the parking/dash lights work - if not check the fuses Could be burned out bulbs - they are double filamented with the larger filament being used for tail lights Could be a bad headlight switch
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.
check the earth connection at the lamp clusters
the dimmer switch is going out if you are experencing that.
The Switch may be bad. Check the bulbs for the parking lights. Check the fuses / relays for the parking lights.
Fuse, wiring, bulbs
Fuses?
If parking and dash lights work: Maybe bad bulbs (double filamented) Bad socket? Bad ground circuit?
If the 4 Ways/Hazards are disconnected then neither will work the park lights nor the turn signals.
Check to see if parking lights are working - usually same fuse or could be light switch itself if all fuses are good