Plug and pins only – AMP 26 pin Key 3 Suits Nexus Series ECU’s

Precision Connectivity: AMP 26-Pin Key 3 Connector Kit

Building a motorsport-grade wiring harness requires components that match the engineering standards of the Engine Control Unit itself. The AMP 26-Pin Key 3 Connector Kit is the specific mating connector designed for the Haltech Nexus Series VCUs. In the modular architecture of modern ECU headers, manufacturers utilize “keyed” connectors to prevent catastrophic cross-connection. This connector features the specific Key 3 indexing ribs, ensuring it can only be inserted into the corresponding port on your Nexus unit. Whether you are constructing a completely bespoke mil-spec loom or repairing a damaged termination, utilizing the correct keyed housing is the first step in ensuring electrical integrity.

Engineering & Construction

This connector belongs to the AMP Superseal 1.0 Series, a standard in automotive ECU connectivity known for its high density and vibration resistance. The housing is molded from high-temperature thermoplastic, designed to withstand the thermal cycling of an engine bay. The kit includes 30 precision crimp pins, which are essential for establishing a gas-tight, low-resistance connection with your wire strands. These terminals are designed to handle the low-current sensor signals and logic-level outputs typical of modern management systems, ensuring that data fidelity is maintained from the sensor to the processor.

Operational Benefits

• Polarized Safety: Key 3 indexing prevents accidental insertion into Key 1 or Key 2 ports, protecting sensitive internal drivers.
• Vibration Proof: Features a secondary locking mechanism (TPA) that retains pins securely even under high-G race conditions.
• Custom Fabrication: Ideal for terminating unused inputs/outputs on a Nexus R5 or building a streamlined harness for a Nexus R3.
• Corrosion Resistance: High-quality terminals resist oxidation, ensuring long-term signal clarity.

Fitment Guide

Specific to Nexus ports requiring Key 3 configuration.

• Suits: Haltech Nexus R5 (and other Nexus series with matching port).
• Keyway: Key 3 (Verify port assignment in ECU manual).

Technical Specifications

Summary & Includes

Includes:

• 1 x AMP 26 Position Connector Housing (Key 3).
• 30 x Crimp Pins.