52-Pin Automotive Waterproof Connector – 1393450-5, Heavy-Duty Plastic Wire Harness Connector

Part number 1393450-5 is a 52-pin heavy-duty waterproof automotive connector from TE Connectivity. Used in commercial truck, agricultural, and industrial vehicle wiring harnesses for complex multi-circuit interfaces. The 52-pin configuration is common for ECM main connectors on mid-range diesel engines, body control module connections, and cab-to-chassis sub-harness interfaces where 50+ circuits must pass through a single sealed connector.

Key Specifications

• Part Number: 1393450-5
• Manufacturer: TE Connectivity
• Pin Count: 52 pins
• IP Rating: IP67
• Housing Material: Glass-filled nylon (PA66-GF), UL94 V-0
• Operating Temperature: -55°C to +125°C
• Application: ECM, BCM, and main harness connections in commercial vehicles

52-Pin Connector — Application Context

• Mid-range diesel ECM: Engine Control Module main connectors on Cummins ISB, ISC, and similar mid-range diesel engines
• Agricultural ECM: Engine and implement control module connections on agricultural equipment
• Body control: BCM connections on medium-duty trucks and buses
• Cab-to-chassis: Sub-harness connections on medium-duty commercial vehicles

Frequently Asked Questions

How do I identify the correct replacement for 1393450-5?

Cross-reference 1393450-5 in the TE Connectivity catalog (te.com). Verify pin count (52), gender, locking mechanism, and mounting configuration against the original connector. For ECM connectors, also verify the connector orientation and any color coding — some ECM connectors use color-coded housings to distinguish multiple connectors on the same ECM.

What contacts are compatible with 1393450-5?

Cross-reference the connector part number in the TE Connectivity catalog to identify compatible contact part numbers. The contact size and type depend on the specific connector series. Verify before ordering — using incorrect contacts will result in improper seating and potential connector failure.

How do I prevent ECM connector damage during diagnostic work?

The most common cause of ECM connector terminal damage is improper probe testing: inserting a test probe into the connector face pushes the terminal out of its locking position (terminal push-back). Always use a back-probe adapter (a thin wire inserted alongside the terminal from the rear of the housing) for voltage and signal measurements. Never insert a test probe into the connector face. After any diagnostic work, verify all terminals are fully seated before reconnecting the connector.

Typical Applications

• Diesel ECM: Engine Control Module main harness connections on mid-range commercial diesel engines
• Agricultural equipment: ECM and implement control harness connections
• Medium-duty trucks: BCM and cab-to-chassis harness connections
• Construction equipment: Control harness connections on medium-duty machinery

Package Contents

1 piece — 52-pin automotive waterproof connector 1393450-5 (housing as specified). Contacts and wire seals ordered separately if not included.