Here's what I did...
I got an on/off switch ($0.99) and spliced into the wiring in my map lights (2 door). I did this because when you open the doors, the map lights turn on. I ran this power wire to the "off" side of the switch. From there, I ran it through the lights to a ground.
Next, i got an "add a circuit" from Canadian Tire (Pep Boys is comparable I think) and ran a constant power to the "on" side of the switch, then through the lights and obviously to a ground.
This gives you full control of the lights turning on when opening the doors and also whenever else you want. The 2 door with a sunroof didn't come with a dome light, so this is good when you need to find something stuck in the back seat.
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Message me on here or personal message if you need more help.