Well I finally got around to seeing if the front dome lights on my Sequoia will function as a regular dome light when the doors are open and it works. I have not seen the interior of a DC but if they have them then this could probably be used on them as well. It took me about 20 minutes to do the whole job. Was pretty straight forward to do this and here's how....

1.Pull down front light. 2 Screws in the sunglass holder area then there are 2 snaps that you must release. Comes out pretty easy.
2.Unplug from harness then take to work bench.
3.Locate White wire on dome lamps. These are the ones that control the light on & off. They work off ground so when you push the switch they get ground.
4.Solder a 1amp diode (I used a 5 amp but 1 should be fine) with the stripe facing away from the light. Do this on both sides to make sure that they are isolated from each other so when one light is turned on the other will not come on.
5.Run wire to rear dome light and solder the end of it to the middle wire which is also white.
6.That’s it!! Now you have front dome lights when the doors are open. They will function just like normal when the button is pressed.
If you have any questions please post or feel free to email me!!

Scott