i have a gs 99 with the pioneer stereo and i am looking at putting the factory nav in it if i have the front monitor and the harddrive in the trunk is the rest easy ???? what do i need a harness is it plug and play do i have to cut any wires???? does any body have any diy pics or model numbers for the wiring harnesses and adapters?????? let me know all u techies!!!!!!!!!

 

you need the wiring harness from a GS with nav also, else, your nav unit is use less. == LOT of works (even if you can find the wiring from other nav GS). It's almost impossible unless you have a lot of time (or money) to pay someone to do it.

fabrication new wires are not an option, unless you have a detail schematic of the whole setup, even so, it is still very time consuming and require lot of skills.

I would give it a try, if I have my hand on a nav unit, only if I can get them for "DIRT CHEAP"
Anh

 

your better off getting am aftermarket nave system, retrofitting a stock nav system is very time consuming and unless your very skilled with electronics and such your not going to go very far