contact EZ WIRE and tell them you want instructions you can read
I thought that with the EZ wiring kits each wire was marked as to its usage. If not start tracing it from its marked fuse and pull it where it needs to go.
Don't forget to cover the wires with plastic loom or the elements will get to them and or they will rub through and short out sooner or later.
that's probably the simplest way w/o instructions. using a VOM set it to ohms and if you have a fairly decent meter it will sound a tone when you touch the connections together. then, as suggested, start at the fuse panel w/ one VOM wire and touch the each other end wires to see what circuit is what according to the fuse block. label it if it is not. then you will have a better feeling about what goes where. as suggested if you don't have a split loom to cover the wire harness in there are available at any FLAPS.
Use zip ties when securing the loom to the truck frame. Ask again when you get stuck.