Driving
5.7 Towing a trailer
5 - 84 3 112 993 en Operating manual GMK 6400
12.07.2013
Connecting the
supply lines
• Insert the plug of the trailer's electrical sys-
tem into the socket (5).
• If necessary, insert the ABS connection
cable into the socket (3).
• First connect the hose of the brake cable to
the yellow coupling head (4).
• Then connect the hose of the supply line to
the red coupling head (1).
This socket (2) is designed for special equip-
ment.
• Check the function of the trailer lighting.
• Test the service brake and parking brake immediately after setting off.
G
Risk of accident if the trailer is coupled improperly
If the pin is protruding from the guide bushing, the trailer is not coupled
properly and could become disengaged from the towbar coupling while
driving.
G
Risk of accident if the hoses are too short or installed improperly
The hose lines may not come off even when driving around corners. When
connecting the hoses, make sure they are long enough and have enough
clearance.
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