Four Seasons 37243 HVAC Automatic Temperature Control (ATC) Relay Connector

Harness Connector for HVAC Relay Service

Four Seasons 37243 is a 4-terminal female harness connector used in HVAC electrical repair and relay circuit service. It is built for applications that call for a female connector with a 6-inch wire length and a 4-pin layout, including select Toyota Land Cruiser, Mazda CX-9, and Hyundai Tucson fitments.

The Four Seasons Harness Connector line focuses on direct-fit electrical connector replacements for HVAC and related relay circuits. Part number 37243 is a practical choice when the original connector body, terminals, or harness end is damaged, heat-affected, or no longer making a secure connection.

Key Features

• Brand: Four Seasons Harness Connector
• Part number: 37243
• Female connector with 4 terminals
• 4-pin connector layout
• 6.000-inch wire length
• Connector shape: other design
• Used in HVAC automatic temperature control relay and related harness applications

Detailed Description

Four Seasons 37243 is an HVAC electrical harness connector for relay and control-circuit repair. The female terminal design and 4-pin configuration make it suitable for service work where the original connector has failed at the plug, terminal cavity, or wire entry point. This connector is listed across a wide range of vehicles, including 2014-2019 Toyota Land Cruiser, 2007-2017 Mazda CX-9, 2008-2009 Hyundai Tucson, and other Mazda, Lexus, Subaru, Audi, Mercedes-Benz, Volkswagen, and Ford applications. If you are searching for a Four Seasons 37243 connector for a Toyota Land Cruiser or Mazda CX-9 HVAC relay repair, this part matches the documented fitment data.

This part cross-references OSC 1548 for the same application.

What It Is Used For

• Replacing a melted or heat-damaged HVAC relay connector
• Repairing broken female terminals in an A/C compressor clutch control harness
• Restoring blower motor relay or condenser fan relay electrical contact
• Fixing intermittent HVAC electrical connection issues caused by worn connector bodies
• Servicing damaged harness ends on select Toyota, Mazda, Hyundai, Lexus, and Subaru vehicles

Installation Notes and Tips

Verify connector shape, terminal count, and gender before installation. Match the existing harness routing and confirm the vehicle-specific application from the fitment list, since this connector is used in multiple HVAC and relay locations. Inspect adjacent wiring for heat damage, corrosion, or loose terminals before connecting the replacement part. For best results, compare the original connector to Four Seasons 37243 before final assembly.

Quality Assurance

Four Seasons supplies HVAC electrical components and harness connectors for service replacement applications. Part number 37243 is cataloged with confirmed vehicle fitment data and interchange references to support accurate ordering and application matching.