Behind the glove box
which wiring schematics do you need?
2003 Jetta Monsoon Premium Wiring Schematics: http://www.modifiedlife.com/2003-volkswagen-jetta-car-stereo-wiring-schematic-for-monsoon-audio/ 2003 Jetta Factory Wiring Schematics: http://www.modifiedlife.com/2003-volkswagen-jetta-car-audio-wiring-diagram/ ..hope that helps you out some
Get a hayenes manual. they cost $15 USD at most auto part stores.
You can find wiring schematic @www.modifiedlife.com falconspath
You can find wiring schematics at autozone.com.
You can find wiring schematics at your local library as they usually have motor manuals there.
chiltons repair manual for your car at the library.
You can possibly order or get the repair manual for the truck at a Toyota dealer's. You can also get wiring schematics from repair manuals sold in bookstores, such as the Chilton's series. Several companies offer manuals with wiring schematics online, you will find this by searching the keywords "repair manual" with the name and model of the truck.
http://www.eautorepair.net/Marketing/Default.asp It's a paid service, but they have TSB's and wiring schematics and you can print out all of the stuff you need...
try a CHILTON BOOK with wiring diagrams
John's f-fun hundreds
Go to a parts store or bookstore and buy a Haynes Manual.