In search of C5 Previous Owner

I recently purchased a very well kept convertible 2000 in Dark Bowling Green with tan interior and a six speed. She is in extraordinary condition and she completes my fleet at the moment. While going over the car very carefully I came across a micro switch installed under the center console and it is located right under the hinge. While I know I could disassemble the center console and trace back the wires I thought it may be simpler to try to track down the former owner since this car was traded in for a C8 at a Land Rover dealership in southern California. I have to imagine that a car this clean, the former owner may have registered it here. So my question is, any suggestions how I can locate and communicate with it's former owner?