Essential 4-Pin Connectivity for Critical Systems
The Deutsch DT-4 Connector Set is a staple in the toolkit of any serious automotive electrician or performance engineer. Designed to handle 4 separate circuits at up to 13 Amps each, this connector is the ideal solution for interfacing with sensors, actuators, and auxiliary components that require absolute reliability. This "Plug and Pins Only" kit allows for the custom construction of harnesses, ensuring that wire lengths are exact and that the electrical path is free from unnecessary splices. Whether you are wiring a CAN bus extension, a stepper motor, or a MAP sensor, the DT-4 provides a sealed, vibration-proof connection that you can trust.
Engineering Deep-Dive: Signal Integrity and Sealing
In data-critical applications like CAN bus communication or analog sensor transmission, connector resistance can introduce signal noise or voltage offsets. The Deutsch DT-4 utilizes solid copper alloy contacts with high normal force to ensure low contact resistance. The housing is designed with a precise polarization key to prevent mismating, protecting sensitive circuits from reverse polarity damage. The integral silicone seals—both at the mating interface and the rear wire entry—provide an IP67 environmental rating. This means the connector is dust-tight and capable of withstanding immersion in water, preventing the corrosion and leakage currents that often plague unsealed connectors in wet environments.
Operational Benefits: Durability and Longevity
The thermoplastic housing of the DT-4 is impact resistant and stable across a wide temperature range (-55°C to +125°C). This makes it suitable for installation in high-heat areas like engine bays (away from direct exhaust headers) or cold, exposed chassis locations. The locking mechanism is robust and tactile, giving the installer confidence that the connection is secure. The ability to disassemble and re-pin the connector makes it a sustainable choice for race cars that see frequent maintenance and configuration changes.
Fitment and Application Scope
The 4-pin DT connector is widely used for:
- MAP Sensors: Especially combined Pressure/Temperature sensors.
- Oxygen Sensors: 4-wire Narrowband and some Wideband sensor connections.
- Idle Air Control Valves (IAC): Stepper motor connections.
- Ignition Coils: Smart coils with power, ground, trigger, and feedback.
- CAN Bus Links: High, Low, Power, and Ground in a single plug.
Technical Specifications
| Parameter | Specification |
|---|---|
| Series | Deutsch DT |
| Circuits | 4 Position |
| Current Rating | 13 Amps |
| Sealing | IP67 |
| Contact Size | Size 16 (Solid) |
Summary & Includes
The HT-031114 Kit provides a robust, sealed interface for 4-wire components. It is the professional standard for ensuring data and power integrity.
Includes:
- 1 x DT04-4P Connector (Receptacle)
- 1 x DT06-4S Connector (Plug)
- 2 x Wedge Locks
- 8 x Solid Contacts (4 Pins + 4 Sockets)
Tech Tip: Always use the correct extraction tool to remove pins. Using a screwdriver can damage the internal retention fingers of the housing, requiring replacement of the connector body.







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