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did you have nav prior to installing the mark lvingston? if so was is just plug and play or did you hve to swap a dash harness for it to work
I did not install the ML system aftermarket. Nav and ML were factory options that I bought with the car. If you're talking about the Vaistech SLI unit, yes, I installed that myself. Just had to take out the head unit and muck with some wires. No swapping of parts necessary.