I have a programmer connected to the OBD2 port on my truck. Recently, it stopped working. I assume it's a blown fuse. I've researched and everything I've found says that and the cigarette lighter are linked to the same fuse. I've also been told that this fuse is located in the central junction box. Where is this box? What I've read says it's under the hood, on the passenger side, and toward the rear of the engine compartment, but I can't seem to find it. Help please?

 

The fuse is in the power center where you indicated under the hood. The box is roughly 3" x 6" and has a VERY difficult lid to be removed. Google Image your year and size of your truck followed by "Power Center" for a pic or go to YouTube and ask "How to change fuses on my XXXX F150"