It will be up under the dash above the pedals OR on the passenger side up in the dash.
12 volt standard, 24 volt optional.
This diagram will be found through an image search. You might also be able find it in the users manual.
Yes I do. Tell me where to send it.
You know that big black cylindrical shaped thing under the hood, made of plastic? That's where you air filter is. The side facing out (away from the interior of the chassis) is where the cover will be. You take that off (typically, you just have to pop open a couple latches and pull it off), then you remove the old air filter, and install a new one. If you don't know how to do something as simple as this, you may want to re-evaluate the wisdom of owning a truck...