SEAL 2K9154 - Caterpillar

The wire size to all Caterpillar components must be of adequate size to handle the maximum current of the circuit. All +Battery and -Battery connections to the ECM Customer connector should be made with 14 AWG wire, this includes the -Battery connections from the -Battery Bus Bar. The connection from the -Battery Bus Bar to the bridge displays should be made with a minimum of 12 AWG wire. All Data Link connection (Cat Data Link and ATA) should be made with the 143-5018 data wire. Caterpillar recommends the use of 143-5018 for ALL Cat Data Link Connections.All other connection should be made with 16 AWG wire minimum. No other components are allowed to be connected to the Caterpillar -Battery wire to the bridge displays.
Figure 1.7 Wire Size Requirements