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4. Typical J1939 Wiring Topology
Most modern engine installations include a harness with built in
J1939 backbone. (Check engine manufacturer's document-
ation). If not, it is critical to use twisted shielded pair with a drain
wire (max length 40m) terminated with 120 ohm resistors at
each end. In addition, all stubs shoud not exceed 1m in length.
Engine and/or
Transmission
Backbone
(Max length 40m)
Termination
Resistor (120 ohm)
KAntrak Display
Stub (Max length 1m)
Termination
Resistor (120 ohm)