Anybody know this wire??

[Gen2Drew]

What’s up Gen 2 lovers. I recently came across a random aftermarket wire that ran from inside back of the bed, under cab, and into the driver side cab under the dash and seems to run across to the passenger side. In the pics you’ll see what seems to be plug and play spliced connection to our stock harness from our trucks. Anybody have any clue what this might be.
You’ll see the two types of connections. 6-prong (was in truck bed had to cut it) and the white connector went to what seems to be stock harness in truck
Thanks in advance.

 

[Antho]

Probably a 3rd brake light harness for someone that had a camper shell.

 

[Gen2Drew]

Ok… well next step is trying to figure out why it was spliced with two fuses… Im not sure if that’s what comes stock in our trucks or if he ran this set up throughout the truck