In center console near passenger side. 3 female electrical.
Forward of cigar lighter, little plastic panel has been removed.
Mine early 01/2002 Base R50

 

The easy answer is that it is part of the wiring harness that is built one way for all vehicles, and then utilizes whatever is needed for that cars build sheet. SPecifically I don't know what that is for but look at the options that were available for your car and see what you DON'T have. Power mirrors? Heated seats?