Q&A

Check out this site http://www.carstereohelp.com/strtoyota.htm perhaps call them and see if they have exactly your model year information.
If you plan on doing some maintenance or service on your truck there is a company that independent auto repair shops "buy" their information from that offer a very reasonable service to do it yourselvers. You get a one year subscription to year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... great quality information same as the professionals have ,much better than generic workshop manuals from parts stores, much cheaper than the factory manual. http://www.alldatadiy.com/