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I have gotten a lot of responses and inquiries regarding my footwell lighting install so I thought I would make a more elaborate thread regarding the process. As usual, you do things at your own risk. I am not responsible for any mistake you may make.
Tools:
Process:
Step 1: remove the driver side under dash panel
Step 2: remove the passenger side under dash panel
Step 3: remove trim around radio
Step 4: remove radio
Step 5: locate the BCM under the driver side dash. You will need to find three plugs. These are called A, B, and C. Obviously B is the middle plug and the one we will be dealing with for this.
Step 6: remove plug B. Once removed, you will need to slide the pin housing out of the sheath. There is a small tab that keeps it in.
Step 7: locate pin 50. This is where you need to insert the positive lead for the footwell lights.
Step 8: reassemble the pin housing, sheath, and plug.
Step 9: find a place to ground the harness. I removed the top screw on the fuse panel and placed the ground lead between the fuse panel and the metal dash frame.
Step 10: run passenger side harness up through the dash and into the radio cavity. Then run it down the other side into the passenger under dash.
Step 11: you will need to punch out the plastic fill pieces that are on the under dash panels, one each side. You may need to use a knife.
Step 12: press the new housings into the hole on the panels and connect the wires.
Step 12a: if you are only doing front lights, this is when you reinstall all panels, radio, radio trim, and move on to coding (step 21).
Step 12b: if you are doing rear lights, you will need to leave the front panels removed, but you can reinstall radio and radio trim.
Step 13: remove driver seat (or remove all four bolts and tip it back out of the way)
Step 14: remove driver interior rocker trim (to expose wiring channel)

Untitled by santorum, on Flickr
Step 16: remove passenger seat (or remove all four bolts and tip it back out of the way)
Step 17: remove passenger interior rocker trim (to expose wiring channel)
Step 18: run the wires for each side down the channels along the other wires. You will see other wires that go to the seats (power controls and heat). Run them along them and secure with a small zip tie or tape.
Step 19: the back of each seat has a rectangle hole for a light housing in the center of the frame. Simply run the wires to these holes, connect the housings to the wires, and then press them into the fame opening. It may take a little force to do so.
Step 20: reinstall interior rocker trim, under dash panels, seats, and any other items you may have removed and clean up.
Step 21: time for coding. Probably the simplest coding to do. You will go in to 09 - Central Electronics and there are two bits that pertain to footwell lights. They both need to be checked (turned on). I will get the exact coding tomorrow.
Step 22: recycle the key and then go into your MFA. Select the Lighting menu and turn on the footwell lights. From here, you can adjust the dimming as well.

Untitled by santorum, on Flickr
Step 23: enjoy your lights. :beer:

Untitled by santorum, on Flickr
Tools:
- trim removal tool [for radio trim and interior rocker trim]
- T20 torx with driver [for radio and under dash panels]
- 10mm triple square socket bit (with driver and extension) [for seats]
Process:
Step 1: remove the driver side under dash panel
Step 2: remove the passenger side under dash panel
Step 3: remove trim around radio
Step 4: remove radio
Step 5: locate the BCM under the driver side dash. You will need to find three plugs. These are called A, B, and C. Obviously B is the middle plug and the one we will be dealing with for this.


Step 6: remove plug B. Once removed, you will need to slide the pin housing out of the sheath. There is a small tab that keeps it in.
Step 7: locate pin 50. This is where you need to insert the positive lead for the footwell lights.
Step 8: reassemble the pin housing, sheath, and plug.
Step 9: find a place to ground the harness. I removed the top screw on the fuse panel and placed the ground lead between the fuse panel and the metal dash frame.
Step 10: run passenger side harness up through the dash and into the radio cavity. Then run it down the other side into the passenger under dash.
Step 11: you will need to punch out the plastic fill pieces that are on the under dash panels, one each side. You may need to use a knife.
Step 12: press the new housings into the hole on the panels and connect the wires.
Step 12a: if you are only doing front lights, this is when you reinstall all panels, radio, radio trim, and move on to coding (step 21).
Step 12b: if you are doing rear lights, you will need to leave the front panels removed, but you can reinstall radio and radio trim.
Step 13: remove driver seat (or remove all four bolts and tip it back out of the way)
Step 14: remove driver interior rocker trim (to expose wiring channel)

Untitled by santorum, on Flickr
Step 16: remove passenger seat (or remove all four bolts and tip it back out of the way)
Step 17: remove passenger interior rocker trim (to expose wiring channel)
Step 18: run the wires for each side down the channels along the other wires. You will see other wires that go to the seats (power controls and heat). Run them along them and secure with a small zip tie or tape.
Step 19: the back of each seat has a rectangle hole for a light housing in the center of the frame. Simply run the wires to these holes, connect the housings to the wires, and then press them into the fame opening. It may take a little force to do so.
Step 20: reinstall interior rocker trim, under dash panels, seats, and any other items you may have removed and clean up.
Step 21: time for coding. Probably the simplest coding to do. You will go in to 09 - Central Electronics and there are two bits that pertain to footwell lights. They both need to be checked (turned on). I will get the exact coding tomorrow.
Step 22: recycle the key and then go into your MFA. Select the Lighting menu and turn on the footwell lights. From here, you can adjust the dimming as well.

Untitled by santorum, on Flickr
Step 23: enjoy your lights. :beer:

Untitled by santorum, on Flickr