Mr4btTahoe

Hey alls...

So the wife's '06 gs300 didn't come with factory navigation, back up sensors, etc...

What I want to know is what all is involved in swapping out to the factory nav system? I can get the main unit for a reasonable price and I think there is a secondary module that goes with it... however what I'm unsure about is the wiring. Are the body harnesses the same or will I have to rewire the whole system?

Wife's birthday is coming up and figured it would be a nice gift.

Thanks