IntroductionTires, Dismounting
Remove the valve insert.
Note
If equipped handle the glued-on wheel trim carefully.
Surface slightly scratched.
Replace the damaged rim wheel trim.
...
13-Pin« Trailer Socket
The backup lamps, »continuous current«
and charging cable can be used on the trailer with the
»13-pin« trailer socket. A
»13-pin« trailer socket is
recommended if a bicycle rack will be installed or a camper will
be towed.
  ...
Trailer Socket
Connect the trailer socket to the vehicle electrical system
of the vehicle pulling the trailer according to the manufacturer
instructions.
Refer to the applicable wiring diagrams or manufacturer
installation instructions when installing ...