you have to wire the city light to the side marker. This way it will come on withthe parking lights....it would look real cool if you can wire the lights so that the fogs, parking and city lights come on at the same time...i will eventually do this when I have time to figure out how to do it. The city light is above the low beam in a cutout. The cutout is just an opening to allow light to escape from....I asked terry sayther the same question and this is what he told me