Chris thanks for the pic of the interlocking wiring harness clamp. I don't know that I would have figured that out. Just ordered my harness, I'll start on it in another week or so. In the mean time, anyone else out there have any advice or picturs of the SL500 to share? I am concerned with taking the wiring off of the injectors. Not sure how they are attached, anyone help me with that? Thanks steve