I bought a new to me 2003 G35 coupe with a spoilter light and a third brake light underneath the rear windshield. The spoiler light doesn't work. Did these cars come stock with two third brake lights or did the PO wire one in because the spoiler one went? Thanks.

 

I believe the CHMS is a federally regulated mandatory light whereas the spoiler light was just a factory option.

 

I'd say your car wasn't delivered from the factory with the spoiler.