One can look for a used Toyota 4 runner on the website Auto Trader. One may also be able to find a 4 Runner on craigslist, or at a local used car dealer.
In the book.
Check the door jam on the drivers side of the 4 Runner you will most likely find a sticker there that tells you the right tires for your 4 Runner.
under the bonnet on the passenger side
A 2003 Toyota 4 Runner serpentine belt diagram can be found in the maintenance manual. A person can also ask for a print off from an auto part store.
You can find a 4-way switch wiring schematic by searching online or consulting an electrical wiring guide. This will help you understand the proper connections and installation steps for adding a 4-way switch to your electrical circuit.
You can find where to purchase a used Toyota 4Runner online at websites such as Auto Trader and Car Gurus. You can also find them for sale by personal sellers on the autos section of eBay.
If your heating switch broke on the heater of a Toyota Previa 92, it will need changed. You can find a replacement at auto part stores.
Your 2001 Toyota 4 runner will not start even after changing the VSV and fuel pump because of another mechanical problem. Consider taking it to a mechanic.
Haynes
You can find a 3-way switch wiring diagram with power at the switch by searching online for electrical wiring diagrams or consulting a home improvement book that covers electrical work. Look for diagrams that specifically show the wiring for a 3-way switch with power coming into the switch.
http://www.everdrive.com/SearchResults.aspx