mercedes slk320

I hit a curb doing about 50 and it jambed the driver side front wheel.  It damaged the fender and the pressed steel suspension attachment points.  Everything has now been sorted out, including replacing the headlight, turn light and body panels.  The only thing that still will not work is the driver rear turn signal.  The bulb is good but there is no voltage to the light.  I do not have a wiring diagram to trace the wires.  The front turn signal and the side mirror signal work fine.  I need to know where to look and what to look for to effect the repair.  Wires, fuses, SAM, relays, etc.