Hey man,

1. VSS is Blue/White located in instrument cluster blue plug pin 3

2. Reverse is Black/Blue located in drivers kick

3. I've gotten away with gps antennas working on the dash with the supplied metal disc undernethe. actually most of the cars i've done nav have had the antennas on the dash with no issues. if you want tho you can mount it outisde.

Good luck.

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Merlin Boissoneault
Install Tech