Vauxhall Vivaro C Owner's Manual page 210

208 Driving and operating
9 Warning
Towing a trailer is permitted only
when a coupling ball bar is fitted
correctly. If the coupling ball bar
does not engage correctly, seek
the assistance of a workshop.
Dismounting coupling ball bar
1. Disconnect the trailer plug.
2. Unfasten the breakaway stopping
cable.
3. Remove the trailer.
4. Take off the cap.
5. Insert the key in the plug lock,
unlock it and remove it from the
opening.
6. Move 1 to left and hold it pressed,
push 2 to the back and remove the
coupling ball.
7. Swivel the connecting socket
upwards. Put on the cap.
Type B
1. Swivel the connecting socket
downwards.
2. Attach the trailer.
3. Connect the trailer plug to the
socket and fasten the breakaway
stopping cable to the eye on the
carrier.