Im intrested in the Eclipse AVN6620 for my 03 Tundra truck I was informed by the local car electronics place that Eclipse makes h/u's that will plug right into the factory harness with a few additional items Is this true ? I dont want to splice my harness. I "do not have" the JBL sys... I have the 6 disc changer but I do have audio the controls on the steering. The audio place says that plug will work as well In the factory Harness any sugestions !!!!!!!!!!!!!