Car Stereos: Head Unit- Lincoln Continental, pioneer head unit, correct connections

Question
I just installed a pioneer head unit (http://pioneerelectronics.com/PUSA/Products/CarAudioVideo/In-Dash/CD-Players/DEH...) in my 1994 Lincoln Continental. The factory head unit had the antenna plug on it. My right speakers are not working in the front or back, but my left speakers both work. When i fade to the left on my head unit, all my speakers are off, when i fade to the right, my left speakers stay on. I checked the plugs in the wiring harness, they are fine. Any help would be appreciated :)

Answer
Mike, it sounds like either a wrong wiring harness adapter or no wiring harness adapter is being used.  Be sure you have a wiring harness adapter that is made for your car, and you should be able to make all of the correct connections to get it working properly.  Hope this helps, Scott