Those custom lights look great.

I started with the Teleflex 3rd brake light extension before I realized that the license plate had to be relocated too. Once I knew the plate was moving, my possibilities became limited. That's why I went with a "standard" offering from Warrior. (The wiring is anything but "standard".)

What I did do was add a backup camera to the plate illuminator mount below the plate. Not a big deal.
NOTE: Once you put on a 35" or bigger spare the rear window is pretty useless. I strongly recommend a backup camera. In fact, starting with 2014 model vehicle, backup cameras are mandatory standard equipment.

By using a 4-wire standard trailer plug at the spare I was able to power:
1) Brake light from wire that went to old brake light wire (under carpet above passenger tail light).
2) Plate illuminator from passenger side tail light.
3) Camera from passenger side backup light.

And still had a separate ground (to passenger side tail light). Quick and easy to connect/disconnect and water proof.

For the camera video signal I used the video cable supplied with the camera/mirror. I just gooped its inards with dielectric grease too.

Updated pic follows:

 

I used the same product, and can't be happier with it. I have been told by many that it really helps the visibility when I'm braking even during the daylight.

 

Here is an easy upgrade!
P/N RS6238
Fits in any 2.25 diameter hole.
Works with the factory wiring, comes with all connectors, extra.
Took me about 20 minutes to install.

 

I dig these. Well done!

 

Nice! This one is sick too. I stuck an LED trailer light in the center of my spare. Does the job, but it would be cool to get a little more creative. Good idea!

 

What's mounted on the tailgate?

 

I cut mine off and didn't replace it.

 

Have you had a state inspection since then?

 

And some more lug lights..

 

Teraflex relocation thing. No plate there yet just cuz I haven't run a plate light wire.