DIY – NAV System Conversion with working rear defrost

2SIC4U

I still have the Nav unit but I would have to remove a ton of other wiring in the dash to allow for the opposite to be wired but from my understanding you would have to swap the entire cars wiring harness to do the conversion from non nav to nav. The nav is all digital and the non nav is analog. This is why you can swap the nav AC to non nav as you can swap the amp and add the wires but for the digital of the nav, it interacts with the cars PCM/ECU. IE, the nav can display other information about the car so trying to go from none nav to nav would be a lot of work and require finding the correct full car dash wiring harness.