I went and bought a double din with Nav. Is there any place i can get a wiring harness that i can plug into the factory harness to install this. There is a lexus cd changer also hooked up.There is like 4 wire harness. Thanks

 

metraonline.com....just about anything you buy as far as install kits, harnesses etc. even from other retailers is a metra kit.

 

yeah try circuit city or a local radio shop