Hi there. Unfortunately, nav can't be added to the my ford touch system. We get this all the time. Straight from ford, "Currently adding navigation is not an option and should not be attempted." When i asked if it will ever be possible, they said they can't rule it out, but for now, no. They have different hardware, not just software. The gps antenna is for the turn by turn directions. They don't have sync services in Canada? That is just wrong. Can't see how they can sell you a product that doesn't work to it's full potential. Maybe check sync my ride.com and email them. Lots of people love the turn buy turn nav. I thought it was in US and Canada, maybe wrong though. Anyway, sorry but adding nav to that system is currently not possible. Good luck, those are nice trucks.