Q: How do I turn off the rear cabin lights. They are on and I cannot figure out ho on 2007 Buick Lucerne

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The rear cabin lights are on and I can't figure out how to turn them off, I read the entire manual and fiddled with all the buttons and gages and they are still on. I am afraid my batter will go dead since they stay on after all the other stuff turns off.
(1) Answer
switch on each side lens back passenger compartment(is part of lens assembly. Also two switches at front dome light (same.