I bought a OEM Nav for my 2004 Expedition and the harness is totally different than the CD/Cassette thats installed. I know it will be a project to make this work but if I can find power and speakers It will be a start....does anyone know what plugs do what from the pic below?

 

Welcome to the site..

What vehicle did it come from, if you know,? and/or what level of audio unit is it? Connector views and pin outs are available, but are vehicle and unit specific, more or less

 

It was the same as mine...2004 expedition XLT.
Mine has Radio CD Cassette no NAV

 

go to the12volt.com for a radio wiring diagram

 

Audio/Nav isn't a stand alone unit.

I sent some connector views to your email for a basic reference..

 

If you need anything go to the12volt.com. There you can get anything you want.

 

the12volt.com is the best one..