Specifications

Electrical System
5.3
5.3 Battery Box Location
An additional battery may only be installed in conjunction
with a D + relay. This battery may only be used to power
defined auxiliary devices such as auxiliary heating or air
conditioning, a loading tailgate, etc. If the auxiliary battery
is located in the passenger compartment, it is essential
that the breather venting is fed into the open air through a
central vent hose.
5.4 Power Supply for Auxiliary
Equipment
Observe the following when retrofitting additional
electrical equipment:
– Body Builders and consumers can order Sprinters with
batteries and alternators with higher power ratings.
– Do not splice additional loads to the
existing fuses
already in use.
– Do not connect additional lines to present lines (quick
clamp connectors are not permitted)
– Install additional fuses to provide an adequate
number of fuses for additional equipment.
Additional electrical circuits must only be connected at the
terminal strip for auxiliary consumers (code EK1)
available in the completed vehicle. The terminal strip,
which has three connections, is located inside the vehicle
on the rear of the base of the driver´s seat:
1. Terminal D+ 12 V/10 A
2. Terminal 30 12 V/25 A
3. Terminal 15 12 V/25 A
Failure to provide for adequate ventilation of any
additional battery may lead to contamination of the
passenger compartment and may cause serious
injury or death.