Originally Posted by AeR0_84
WIRING & ANTENNA CONNECTIONS (Sold Separately)
Wiring Harness: • XSVI-5524-NAV - Ford interface 2011-up
• FRST-2 - Ford RSE/SYNC/THX Retention Interface 2012-up
Antenna Adapter: • 40-EU10 Multi-App antenna adapter
what if you have a base model system like me?
Well, the wiring harness and antenna adapter are necessary no matter what.
As far as the Sync retention interface, I believe that might be for control of the second (little) screen, just to be able to access the menu and change the date.
Might be worth contacting metra, though.