Originally Posted by flyboy1100
looks like it uses a 28pin adapter
i would be suprised if you had a GPS antenna, you might have the wiring so it can plug in, but i don't know why they would install it in a vehicle that doesn't have it ordered as it would be a tremendous cost over all the cars.
I believe it has more to do with the trim option. The base WRX doesn't have the harness for the NAV Unit so that's why it wasn't even an option for them. Premium, Limited, STi and Limited STi all have the NAV option so I'm thinking they must already included the harness? lol I could be WAY off here but hoping for the best. We'll find out when it gets here lol. Hopefully David (SVXc) will be able to chime in on this and has the necessary harness for me to install it if need be.