I had the hardest time trying to figure out how to keep the interior lights off when you open the doors. Finally figured it out! For those that don't already know if you turn the gauge cluster dimmer all the way down and keep going there is an additional click where it seems like nothing additional happens. Well that's what the additional click does! Keeps the interior lights off when you open the doors. Really helped to keep my little one (and wife) asleep when I had to make a few stops late last night driving home.