TF86DC User Manual
Updated 23 April 2020 Page 8
3.3 Installing the TF86DC refrigerator in the Freightliner “New” P4 Cascadia
The TF86DC can be installed in the Freightliner 2018+ P4 Cascadia using the OEM supplied base plate and two straps.
Connect the 12VDC power using the CPlug Extension Adapter Wire Harness (Sold separately).
The CPlug is a 3' power adapter cable specifically designed for "New" P4 Cascadia installations where the TF86DC is
being installed onto the OEM provided base plate behind the passenger seat. The CPlug extends the factory supplied
"New" P4 Cascadia power connection under the bunk bed on the passenger end to the mounting plate behind the
passenger seat. The CPlug is approximately 36 inches in length and consists of two (2) 12 gauge wires; Red (positive)
and Black (negative). One end terminates in a female double spade Delph connector that connects to
the TF86DC and the other end terminates in a male Delphi connector that connects to the "New" P4 Cascadia
existing OEM connector under the bunk bed.
3.3.1 Installing the CPlug Extension Adapter Wire Harness for “new” Cascadia P4
Lift the bed, unplug the connector from the back of the outlet and connect to the Delphi connector end of the CPlug
and run it along the under bunk wall and out at the rear of the platform to the TF86DC located behind the passenger
seat.
3.4 Ventilation
It is very important for the refrigerating unit, consisting of the compressor and the condenser to be well ventilated
with adequate air flow into and out of the cabinet housing the refrigerator. (See 8.0 Illustrations: Figure 8.5 “TF86DC
Ventilation Diagram” for details). Do not install the refrigerator near heat sources
3.5 Wiring System: Function and Features
The Electronic Control Unit (ECU) is a piece of electronic equipment which controls the motor of the compressor and
carries out all the controls and electrical protection of the system. The ECU provides protection of the battery with
automatic turning off of the compressor when the feeding voltage reaches the minimum threshold level (cut out).
The compressor will start up automatically again when the voltage goes back to normal values (cut in). (See Table
3.5.1 “ECM Cut-Out / Cut-In Voltages”).
Table 3.5.1: ECU Cut-Out / Cut-In Voltages
3.5.1 Wiring Connections
Typically, your TruckFridge will have the correct gauge wire and connector installed on the fridge to connect to the
standard truck factory wiring. If the truck was not equipped with a fridge from the factory, the manufacturer would
often connect the fridge wire to a 12v cigarette type receptacle. In these cases, unplug the connector from the rear
of this receptacle and plug this into the connector on the fridge wires. NOTE: There are proper wire connectors
available from TruckFridge for most truck wiring installations.
When you connect the refrigerator, you must remember the following:
1) Use cables having the proper cross section to make the feeding lines. If possible, such cables should be without any
joints on the leads which could lead to voltage falls. (see “Table 3.5.1.1 “12VDC Wire Gauge Chart”)
