Can anyone tell me were i can find a complete wiring harness new for my 68 continental.

A good friend of mine owns Lincoln Parts international in California. He has a web site you can look at. His name is Jeffrey Weiner. Let me know if he can't help you.

LPI (already mentioned)
Bakers Auto http://www.bakersauto.com/
Chris Dunn's Lincoln Land Inc. http://www.lincolnlandinc.com/

if your not wanting to go original and go better. Go with a American Auto Wire Highway 22 Kit. they are by fare the best aftermarket kit to install. They are about 400 depending where you get them. but if your redoing it all do this kit