Connectors and Wiring Harness Requirements The following table contains the Caterpillar part numbers for HD-10 inline connector plug and receptacle for all available number of pin positions. Most common usage for the HD-10 connector is the 9-position connectors used for Cat service tool interface. Interface sealing caps and wire strain reliefs are available for the connectors. Contact the local Deutsch sales contact for more information on these components. 5.1.3 Deutsch DRC/AEC Connector The connector is available in 24, 40, and 70 terminal configurations. It can be used for inline or bulkhead mountings. The connector is frequently used in electronic box applications.
The wire size range the connector will accept is 0.8 mm 2 (18 AWG), 1.0 mm 2 (16 AWG), and 2.0 mm 2 (14 AWG). The plug assembly with interface seal accepts socket terminals and the receptacle (header) assembly accepts pin terminals. Sealing plugs are to be used in unused wire cavities. The optional Caterpillar customer harness uses the DRC 40 terminal configuration. Customer interface with this harness is the 40-position plug connector (Caterpillar part number 8T-9834). This connector is labeled as P61 on engine wiring schematics. The DRC connectors are keyed to align correctly when the two parts are mated together. An allen head screw holds the two connectors in place.
Ensure that the allen head screw is tightened to a torque of 2.25 + 0.25 N•m (20 + 2 lb-in.). 5.1.4 ECU 70-Pin Connector 5.1.4.1 ECU 70-Pin Mating Connector (J1) The ECU uses an integral rectangular 70-terminal AMP connector to interface to the OEM vehicle wiring harness (AMP part number 776241-1, Caterpillar part number 160-7689). ECU connector screw torque should be 6 Nom ±1 Nom (4.4 lb-ft ± 0.7 lb-ft, 53 lb-in. ± 8.9 lb-in.). Reference Figure 1 for connector picture and placement on the ECU. 5.1.4.2 ECU Connector Endbell An AMP 776498-1 (Caterpillar part number 237-0336) connector endbell is available to provide additional protection and controlled wire routing for the harness at the ECU.
This is a new part number for the A4 control. NOTE: Unless special arrangements are made with Caterpillar, the AMP 70-Pin connector and connector endbell are available only through the Caterpillar parts system. A P P L I C A T I O N A N D I N S T A L L A T I O N G U I D E 27 HD-10 CONNECTORS Terminal Numbers Plug Kit Receptacle Kit 3 8T-8731 8T-8732 6 8C-3654 7T-3272 9 8T-8735 8T-8736