Westfalia Automotive 321 540 300 107 Instructions De Montage page 22

Socket Pin Assignment
Pin Circuit
1 Indicator lamp, left-hand side
2 Rear fog lamp
3 Ground (circuit 1-8)
4 Indicator lamp, right-hand side
5 Tail light, right-hand side
6 Stop lamp
7 Tail light, left-hand side
8 Back-up light
9 Constant plus
10 Charging line
11 Ground (circuit 10)
12 Trailer identification
13 Ground (circuit 9)
22 321 540 391 101 - 005 - 10/07
Installation Instructions:
Electrical System for Towing Hitch
Wire Colour
black/white
gray/blue
brown
black/green
gray/red
black/red
gray/black
black/blue
red
yellow
brown/white
--
brown
VW Golf A5