Connect The Electrical Componets 2-Way Option; Connectivity - Norcold N4000 Installation And Owner's Manual

2. Install a fuse in DC power supply wires between the battery and the refrigerator:
- Put fuse as close to the battery as possible.
3. Connect the DC power supply wires:
These models have 2 connection points to prevent the battery from being discharged by the
refrigerator when the engine is not running.
High current supply
Low current supply
D+ signal
Use Stocko / Tyco / Amp 6-pole housing, or equivalent, with Lear connectors, or
equivalent, wired as shown.
Do not use the chassis of the refrigerator or the vehicle frame as one of
NOTICE
the conductors. Attach the DC power supply wires only to the battery
and the DC power cord of the refrigerator.
Connect the Electrical Components- 2-way Option
When the 2-way option is connected, the 12V DC power supply will be deactivated and only the gas and AC power supply are
available. To use the 2-way option, connect the wiring according to this diagram. (See Art02752) The 12V connector to the power
control board is provided by Thetford. A cable bridge will need to be done by the OEM.

Connectivity

To connect the refrigerator to the central board of the vehicle,
use the CI-bus protocal (please refer to: www.civd.de).
Any error message coming from the
!
WARNING
refrigerator and shown on the master
display, should not distrub the driver. For
example : lights and/or sounds coming
from the master display while driving.
There is no load dump protection circuit
!
WARNING
present on the CI-bus refrigerator
electronics. Thetford requires that a load
dump circuit (which complies with the
relevant regulations) is installed on the CI-
bus master if the refrigerator is connected to
the CI-bus.
The CI-bus connection point is located at the rear of the refrigerator.
(See Art02753)
CI-Bus connection is not available for models with a
NOTICE
battery pack.
CI-bus connector plug on refrigerator:(See Art02755)
Mini-Fit Jr. connector (male) supplier Molex PN 39012020, cable
length; 90mm.
CI-bus vonnector plug counter part: (See Art02754)
Mini-Fit Jr..Mini Fit Jr. Connector (female) supplier olex, Pn 39012021
red cable (+) and white cable (-) for heating element. Only turned on if
signal on D+
purple (+) and black (-) for electronics.
orange, + when engine runs
ENG RUN
1
LC+12 VDC
LC GND
HC+12 VDC
HC GND
ART 02752
ART 02753
ART02755
Art02370
TYCO / AMP 180906
Art02350
TYCO / AMP 280314
D+ Engine run
+12VDC
2
R1
47kΩ
+2VDC
R2 Vehicle
10kΩ ba�ery
GND GND
ART02754
Installation and Owner's Manual 27
M
GND
1
2