Greetings...I'm trying to install the Hella Optilux 2500 fog lights following some old post. I'm getting to the wiring part(not good). From BSCB this was how he did this..."for the halo's I spliced into the white and purple wire off the parking lights. And for the fog light I spliced into the white and blue wire on the headlights. If you do it that way the halo's will come on when you turn on your parking lights and the fog lights come on with the headlights. I did it this way so I didn't have to have a separate switch". There is a black wire from the fog lights, which I assume is the ground. My question is, do these get spliced into the green wire for the headlights and parking lights.