I'd even include the "dim" light in the subjective column. If it's out, it's out.
I got to thinking earlier about dash cams. They've been known to prove the cop's argument in court numerous times already as the tape doesn't lie. There's probably an equal number of citizens spared unnecessary harassment because of them as well.
A question for LEO's here. Out of curiosity, how long do you keep your dash cam footage? Say, you pull over a person and give them a ticket. 3 days later, you get called to your boss's office saying that the person you ticketed is filing a complaint of harassment, brutality, etc, would you still have your footage to verify your side of the story? Is there protocol on how long that footage is kept in case it is needed for future court cases?
My video's are kept for a minimum of 1 year from my in car camera. I have some tapes from probably close to 3 years ago. If it's a criminal case, the video is burnt to CD and sent to the prosecutors office with the report.