Which lights?

There should be two wiring harnesses one each for right and left front bumper to serve the directionals, and fog lights.

The fogs have each 2 wires within a black insulate casing, a single green/white wire (+ switched), and a single brown wire (- neg) You should be able to destinguish these from the directionals which have 3 wires per casing. 1 brown, and 1 white, 1 yellow I believe, each side. the harnesses run up and behind the headlamp assembly.

Sorry I don't have a wiring diagram, maybe someone else may chime in here, or you may have better results posting this question in the SL forum here.

BB