To install you will need a harness adapter, install ki(bezel adapter), and a antenna adapter. Some online places like cruthfield will send these free with most purchases but walmart and best buy also carry them. I wire the stero harness to the adapter harness inside on the couch. It is very straight forward color matching and I use butt connectors for a cleaner install. Then slide the the bezel adapter over the HU, right side up it matters on some kits, and secure it to the hu using the tabs on the metal sleeve making sure it is tight. Then take it to your truck and plug in the wire harness and antenna adapter and slide the HU into place and fasten the screws. Then plug in all of the wires on the main bezel, you don't want to go with out ac, and I start on the left side, align the tabs and press them into place working back a crossed the bezel. Reinsert hook screw and done. Oh install trim ring on hu if you haven't done that yet