I have a 3rd brake light from a 2008 Super Duty that I did an LED mod to.
I am looking to get $85 OBO Shipped within the lower 48.
For trucks that came equipped with cargo lights these are plug and play. For those that came without Cargo lights you will have to run a wire from the dome light back to the harness. I will include the pigtail you need to add the new pin into the plug and I will also provide the buyer with instructions. Its very simple though.
The Brake lights I used 42 Phillips Lumileds at approximately 5 lumens each that's a 210 Lumen Brake light.
Voltage regulator is a Sharp PQ12RD21 which is a 12v regulator.
For the Cargo Lights I used 2 Cree XT-E LEDs one on each side. Driven by a LUX Drive 700mA Flex Block. The cargo lights will be about 500 lumens. I will have some TIR style optics on them so the light is more focused.
This thread has all the specs on the light.