Mercedes-Benz E-Class Owner's Manual page 228

the current has fallen below the minimum
of 50 mA.
To ensure reliable operation of the bulb failure
indicator, each LED chain in the trailer lighting
must be guaranteed a minimum current of
50 mA.
Trailer with 7-pin connector
General notes
Trailers with 7-pin connector: you can
make a connection to the 13-pin connector
on the ball coupling using an adapter plug or,
if necessary, an adapter cable. Both can be
obtained in a qualified specialist workshop.
Fitting the adapter
! Make sure that there is sufficient cable
play so that the cable cannot become
detached when cornering.
Open the socket cover.
X
Insert connector with lug : into
X
groove ; of the socket. Turn the connec-
tor clockwise to the stop.
Let the cover engage.
X
If you are using an adapter cable, secure
X
the cable to the trailer with cable ties.
Towing a trailer
Z
225