At the headlight switch connector the brown is rear lights (tails)
The Dark green goes to the fuse panel to the instrument fuse...then turns grey and back to the panel lights.
Purple is the front marker/park lamps
Orange will have 2 wires...its hot feed to dome lamps
White is the return from dome lights to the rheostat for the panel dimmer /dome control at the switch
Light blue goes to dimmer/ hi/lo/ beam switch then to head lights.
I am pretty sure if you put the purple in the connector position the picture shows, you will get the result you want.
You could hook the purple (front light feed) to the dark green(panel dimmer) and then you could dim the front parking lights LOL