I thought it might be a fun and informative thread to post up all those little things we find in or on our Challengers for which purpose or function befuddles us. Please feel free to post up your Challenger mystery, no matter how innocuous.
OK, what is this dome shaped thing mounted dead center on my dash, and what does it do?
OK, what is this dome shaped thing mounted dead center on my dash, and what does it do?

