I just did this awesome mod and thought I will share a bit more and also to help keep this usefull thread alive. As Op mentioned, knowing which is positive or negative does not matter in this case, just connect the other way if it does not work. However for informational purpose, the lead with the 2 wires (top one in the pic) is the positive lead.
It is one lead shared by both lights, the other 2 are the negative leads and goes to the white switches which operates anytime you push the white plastic covers. soldering was easy but you can cut it down from 4 to 3 if you want. Just solder one wire to the positive lead and split into 2. Rather than fishing all wires to the passenger side, you can fish the 2 going to the driver side through the driver side of the headliner. Remove the 2 screws holding the sun vosor (first pry off the cover). That allows you to pull the front of the headliner a bit to fish. I used the largest and longest size ziptie for the fishing (It is flat and flexible to make it easier).
Thanks again dcains for such a great idea

 

Glad you like it. Still one of my favorite little detail changes I've made on my '08.

 

I think I'm going to try this this weekend

 

Sometimes the oldies are the best and i think this is the best footwell lighting addition that I've seen. OK there are others where the wiring might be easier to hide but to me this is the most "factory" with the way that the lights switch on and off with the main courtesy lights. Great job DC

 

If I have time I'm going to put this in this weekend.

 

Hey guys reviving a very old thread I want to do this but I can't see pictures in the thread can anyone help with this. Thank you.