Positive Battery Output (B+) Circuit 38 (BK/OG)
WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
The generator output is supplied through the battery positive output (B+) terminal on the rear of the generator to the battery and electrical system.