Installing the fuses
23. Insert the provided fuses as follows:
15A fuses to free positions 1, 3, and 5 of the fuse holder.
-
30A fuse to position 19 if required.
-
Cable
Position
red
red/black
red/blue
red + red/black
Reinstalling removed components
Checking correct operation
24. Reconnect the ground of the vehicle's battery.
25. Check the trailer function with the help of a suitable test instrument (with load resistors) or
with the help of a trailer.
26. Secure all cables using cable ties.
27. Refit any parts removed for installation.
24
Amperes
1
15
3
15
5
15
19
30
321 500 391 102 - 002 - 44/05
Electrical system for towing hitch
Function
Trailer socket, pin 9
Trailer power supply, left
Trailer power supply right
Power supply position 1+3 if required
Installation instructions:
Porsche Cayenne, VW Touareg