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1999 996 Adding 2004 nav/stereo unit

Electrical and Electronic

Vehicle Information: Model: 996; Year: 1999; Body Type: Cabriolet; Total Mileage: 92560;

I acquired a 2004 Nav/Stereo unit and a instrument cluster also for a 2004 (TIP which is correct). I realize I am dealing with a fiber optic system as opposed to the original wired system. I am looking for a newer wire harness from a 2003-4 with the same options, and antenna. Is this conversion able to be done and am I going in the right direction? What other parts and potential pitfalls might I encounter? I also found out I can't just buy a wiring harness from Porsche, it must be ordered by vin. number. thus I must find a damaged car with the same option, thanks.

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