adapter for the electrical connection between the
trailer and your vehicle.
The trailer socket of your vehicle is equipped with
a permanent power supply at the factory.
The permanent power supply is supplied via
trailer socket pin 4.
Note that the trailer's permanent power supply is
not switched off when the vehicle's on-board
electrical system voltage is low. This could com‐
pletely discharge your vehicle's starter battery.
Further information on the electrical equipment
currently installed on your vehicle, and on instal‐
ling trailer electrics, can be obtained at any quali‐
fied specialist workshop.
158 Driving and parking
Summary of Contents for Sprinter 2019
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