epic1si Posted January 7, 2010 Share Posted January 7, 2010 Just wondering if anybody has installed factory navi unit into a gs300 non navi without having to replaced the complete dash harness.. I can't seem to find any help on this or a how to thread.. Quote Link to comment Share on other sites More sharing options...
navguy Posted January 22, 2010 Share Posted January 22, 2010 Just wondering if anybody has installed factory navi unit into a gs300 non navi without having to replaced the complete dash harness..I can't seem to find any help on this or a how to thread.. Almost impossible since the vehicle harness (without navigation) is missing so many inputs/outputs/parts: Speed Pulse Microphone Parking Break Different amplifier GPS antenna Navigation computer Navigation monitor Steering wheel controls for voice Go aftermarket... much easier. Quote Link to comment Share on other sites More sharing options...
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