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Discussion Starter #1 (Edited)
For those wanting to add LED lighting to the foot well and tie them into the map light so they will dim out like the map lights here is a short tutorial for the proper connections. I have the standard mirror and have OnStar so if you have the same mirror these instructions will work for you. You do not need to install a relay with this setup. I used 9 inch led strips that have adhesive strips purchased from Advanced Auto.


Remove the sun visors and the pull down on the panel above the windshield it has metal clips that snap in. Once panel is down you will see a bundle of wiring running from the mirror. Gently peel back some of the binding and locate the "Gray" wire.

Be careful not to mistake it for a gray wire with a black stripe in it. Once wire is located use a wire connector like the one in picture. This wire is connected to the ground wire on the Led lights. I connected my wire here and fed it through the straps that hold the harness for the mirror


I then took small plastic ties and tied the new wire to the mirror harness so they will not rattle later when driving. I pulled down the side panel and fed the wire down and removed the side dash panel to access it.



I then went to the fuse panel on the passenger side and found a "hot" outlet that does not require the key to be on. I used slot #27 the interior lights 10amp fuse socket.



Using a fuse link I purchased at Auto Zone



I removed the center console and ran my wiring around to the passenger side fuse box.



Here is the wire connector I used to tap into the gray wire in the mirror harness.




I wired 2 led stripes and tested my setup and it worked perfect.
 

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Nice Pictures and write up. Do you have pictures of the finished product? I would like to see that!
 

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So when the lights are faded down by the computer, it cuts the ground and not the power?

Also, when you turn on a map light with one of the switches on the bottom of the mirror, do the footwell lights come on?
 

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Ah yes, just another thing to add to my winter to-do list!

Excellent how-to-do-it! Thanks for the detail. Anxious to see it in person next time we meet.
 

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Thanks for this mod. I used red LEDs. I installed it yesterday morning, finally nighttime arrived, it looks awesome. :)
 

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Nice write-up, Glenn.

This can also be done without getting into the windscreen frame, since the grey wire you are tapping into originates in the BCM, pretty much right next door to where you made the power tap.
 

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Discussion Starter #11
Nice write-up, Glenn.

This can also be done without getting into the windscreen frame, since the grey wire you are tapping into originates in the BCM, pretty much right next door to where you made the power tap.

Thanks JR I will see if I can locate that wire and update the post with an pic of it's location.
 

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It is pin A-10 in connector C3 on the BCM.

C3 is the big connector that sits horizontally just above the fuses.
The rows are A-D across the short side, and 1-12 in the long dimension.
D1 is the big pin in one corner.

You already know that its the grey wire, there are also grey wires in A4 and A5.
 

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Nice! I'll try myself at it too.

Thanks for the infos!
 

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Thanks JR I will see if I can locate that wire and update the post with an pic of it's location.
I'm doing this this weekend. I'll look forward to your pic post and will also post pics of my install. I'll be tying in my windrestrictor to light up with the map lights and foot well too, plus I'm going to add a switch to turn them on without opening the door.
 

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Great job Hoosier. One thing, you could have cut back the insulation to expose the wiring near the bottom of the A-Pillar instead of running the wires all the way up to the light.
 

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Discussion Starter #16
Keep an eye on this as JRinKY will be posting a pic where you can connect to the ground wire from the BCM and cut down the install work considerable.
 

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These scans from the service manual show where the Courtesy Lamp wire connects to the BCM.

This is the face of the BCM. Note that C3 is the big connector near the center, just above the fuse block.



This is the pin layout of C3. Note that the Courtesy Lamps are controlled by the Grey wire connected to A10, which is near the bottom right corner of the connector.

 

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Thanks, JR! :dthumbs: Your input and Hoosier GXP's have rendered this mod virtually "too easy NOT to do." One tap, one crimp, adhere the LEDs and you're essentially done. :yesnod:

I really do appreciate the good minds on this forum. :)
 

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Discussion Starter #19
Thanks, JR! :dthumbs: Your input and Hoosier GXP's have rendered this mod virtually "too easy NOT to do." One tap, one crimp, adhere the LEDs and you're essentially done. :yesnod:

I really do appreciate the good minds on this forum. :)

Thanks Chemist the only way it could be any easier is if JR came to your house and did it for you ..................and he is just the kind of guy who would do it to.....:yesnod:
 

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Hoosier GXP : Thanks Chemist the only way it could be any easier is if JR came to your house and did it for you ..................and he is just the kind of guy who would do it to.....
Assuming that Cold Beer is involved at some point after the work gets done.
 
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