Dump Bed 12 Volt Power

[awickedtruth]

I want to use the 12 volt outlet in the bed to power a small electric cooler... but I want to run it off a second battery in a dual battery setup. So I need to tap into the 2 wires that go to the outlet in the bed. It looks like it runs in the harness that goes across the bed and runs up the passenger side. Does anyone have a wiring diagram or details where to find these 2 wires. I will trace them down tonight if needed but hoping someone had already found them and could help me out. Thanks in Advance

 

[awickedtruth]

OK, Curiosity was getting to me so I decided to trace the wires to the 12 volt plug in the dump bed. They run to the plug on the passenger side and attached to the frame above and behind the battery. In the second picture the bottom go to the plug. The brown wire is the negative and the Orange with a Blue Stripe is the positive.