Find a Haines or Chiltons manual. About all that is going to have something that old. Most current service literature does not go back beyond the early 80's or so.
wiring diagramfor 1968 windshield wiper motor
http://www.moby302.co.za/wiring/diagrams.html
answer
http://home.clara.net/hallvw/wire6870.htm
call year one and see if they have a book on it.
The best place to find a wiring diagram is in the Cadillac Shop Manual. You can find one on eBay in the $50 range. It gives you the wiring diagram and so much more. Mine is becoming threadbare from use.
http://home.clara.net/hallvw/vwwiring.htm has links to most air cooled vw wiring diagrams
You need to purchase a Haynes Manual that is specific to your car.
Go to the library and get a chiltons repair manual for your year car.
pick up a chiltons manual for your car at the library.
* 1968 383 Barracuda * 1968 383 BlockNumbers * 1968 Plymouth Roadrunner 383 Engines * 1968 Super Bee 383 Which 383 are you refering too...
Check with an older repair shop or go to the public library.