Have a 2006 MC-S. 2700 mi. Driving tonight and noticed a factory wiring harness terminal hanging by my brake pedal. Near as I can tell everything still works in the car. Slid under dash and cannot see any apparent connector for it. It has two rows of female receptors for very small pins, and a sticker on it that says 663. I bought it in SoCal but had it shipped to WA while I stay here a year. Closest dealer in Tacoma 45 miles away. I'll cal them in the morning...but does anyone have any ideas what this is and where it connects to? Thanks in advance.

 

You got me curious. I looked under the dash of my '06 and their are surprising few wires under there. The only thing I think it could be is the OBD recepticle. Your description sounds sort of like a diognostic recepticle. It is supposed to be stored under a little plastic door just to the left of the light under the dash. Other than that, I didn't see anything that could even fall loose.