Standard Ignition S2978 HVAC Clutch Coil Connector

HVAC Clutch Coil Connector for Nissan and INFINITI

Standard Ignition S2978 is an HVAC clutch coil connector built for direct electrical repair at the compressor clutch circuit. It uses a rectangular male connector housing with a female blade terminal and 18-gauge, single-wire lead for a clean replacement on select Nissan and INFINITI applications.

Use this connector when servicing air conditioning wiring on vehicles such as the Nissan Armada, TITAN, Pathfinder, and INFINITI QX80, QX56, and G37. Standard Ignition S2978 is a practical choice for restoring a secure connection at the HVAC clutch coil.

Key Features

• HVAC clutch coil connector for compressor clutch electrical repair
• Rectangular connector shape with male housing and female blade terminal
• 18 ga. single-wire lead with 16.5 in. harness length
• 1 in. housing length for compact routing
• 0-degree bend angle for straightforward wire alignment
• Direct-fit style for select Nissan and INFINITI models

Detailed Description

Standard Ignition S2978 is designed for HVAC clutch coil wiring service where the original connector is damaged, heat-affected, or no longer making a reliable contact. The connector uses one female blade terminal in a rectangular housing and a single 18-gauge wire to support a focused repair at the compressor clutch circuit. This part cross-references PT3016 for the same application. It is commonly used on fitments including 2005-2015 Nissan Armada, 2017-2021 Nissan TITAN, 2008-2012 Nissan Pathfinder, 2004-2013 INFINITI QX56, and 2008-2013 INFINITI G37.

What It Helps Fix

• Broken or heat-damaged HVAC clutch coil connector
• Intermittent compressor clutch engagement caused by poor terminal contact
• Corrosion at the original A/C connector
• Wiring repair after connector housing cracking or melting
• Loss of electrical continuity at the compressor clutch circuit

Installation Notes and Tips

Inspect the compressor clutch wiring before installation and verify the terminal orientation matches the original connector. Confirm the harness route allows the 16.5 in. lead to reach the repair point without strain. For best results, compare the original connector shape, terminal style, and wire gauge before final connection. Compatible With 2017-2024 Nissan Armada, 2014-2022 INFINITI QX80, and 2016-2021 Nissan TITAN XD applications where this connector style is specified.

Quality Assurance

Standard Ignition replacement electrical connectors are built for service work on vehicle HVAC circuits and are backed by the brand’s established aftermarket parts support.