Join Date: Jun 2018
Location: NW italian Alps
Depending on the model year you have (16-17 vs 18-) the accessory socket can be connected to the front option connector (MY16-17) or directly to the main loom (MY18-).
The front option connector (the one behind the instrument panel) is there even for MY18-, difference is that in the first case you'll need the "sub harness" to get a free connector to be used with the GPS. In the second case (MY18-) you don't need the sub harness as the front option connector is available.
If you plan to add OEM lights, then the front option connector will be used by them, too (just for the fog light indicator in the dash). So again, you'll need the sub harness.
In short, if you plan to add the OEM fog lights AND you have a MY16-17, I would NOT use the front option connector for the GPS. To power it, if you want to use factory locations only, you can connect to the rear option connector (6-way).
However, if you decide to use non-OEM fog light you can build a custom cabling to power both GPS and lights from the front option connector, using OEM connectors and having, in this way, even the fog light indicator on the dash when you power on the auxiliary lights. This is what I did.