Mercedes-Benz Body & Equipment Guideline for Metris - BM 447, Version November 27, 2015.
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Please observe the revision notes compared to 09/18/2015 ! Only print out complete sections of the current version!
104
9.4 Interfaces/electrical lines
9 Electrical system
9.4.4 Connecting additional electrical con-
sumers
a
WARNING
Tampering with and unauthorized installations in the
vehicle electrical/electronic systems can impair the
functioning of these systems. This can lead to failure
of components or of parts relevant to safety, and
may result in accidents or damage to the vehicle.
!
Note
Furthermore, tampering with the vehicle electrical/
electronic systems can invalidate the warranty or the
applicable Safety Certification.
The following must be observed when retrofitting addi-
tional electrical consumers:
•
The alternator and batteries must be of sufficient
capacity (positive charge balance). In this case it is
necessary to install batteries of a higher capacity
(
Page 99) and alternators of a higher capac-
ity (
Page 105), which are available as special
equipment.
•
No additional consumers may be connected to
assigned fuses.
•
No additional lines may be connected to existing
lines (e.g. with cut-and-clamp connections).
•
Additional electrical consumers must be sufficiently
fused using additional electrical fuses.
•
The line cross-section must be dimensioned
according to the current intensity drawn, see
5.5.1 “Electric wiring/fuses” (
•
Electrical lines must be routed correctly, see
9.4.1 “Electrical lines/fuses” (
•
There must be no impairment of the accessibility or
easy maintenance of installed equipment.
•
The necessary air supply and cooling of the engine
may not be impaired, see 7.3.3 “Engine cooling”
(
•
The guidelines of the equipment manufacturer
for compatibility with the basic vehicle must be
observed.
•
The operating instructions and the maintenance
manual for the additional assemblies must be sup-
plied when handing over the vehicle.
•
All installed electrical consumers must be electro-
magnetically compatible, see 9.2 “Electromagnetic
compatibility (EMC)” (
•
A certificate from the manufacturer or a CE mark
are sufficient for retrofitted electrical equipment if
the equipment has no effect on immunity to inter-
ference.
•
The connection of additional electrical auxiliary
consumers must be carried out using the terminal
strip for auxiliary consumers (code EK1) available
ex-factory, see 9.4.5 “Current consumption via
terminal strip” (