Four Seasons 37220 HVAC Automatic Temperature Control (ATC) Relay Connector

Four Seasons 37220 Harness Connector

The Four Seasons 37220 is a harness connector for HVAC automatic temperature control relay circuits. Built as a square, 5-terminal connector with male gender and female terminals, it is used in vehicle climate control electrical connections where a secure relay interface is required.

Key Features

• Brand: Four Seasons Harness Connector line
• Part number: 37220
• HVAC Automatic Temperature Control (ATC) relay connector
• Square connector shape for relay-style harness applications
• Male connector with female terminals
• 5 terminal / 5 pin configuration
• Fits a range of Chrysler, Dodge, Buick, Cadillac, Oldsmobile, Pontiac, and Chevrolet applications

Product Details

Four Seasons 37220 is a harness connector used in HVAC electrical systems where the relay connection must remain secure and properly indexed. The connector design supports automatic temperature control relay applications and related A/C compressor clutch, fan motor relay, and blower motor relay circuits found across multiple GM and Chrysler platforms. This part number 37220 also cross-references Gates 24026 for the same application.

Compatible vehicle coverage includes Fits 2007-2010 Chrysler PT Cruiser, N/A; Fits 2003 Dodge Dakota, N/A; Fits 1995-1996 Buick Roadmaster, N/A; Fits 1991 Buick Roadmaster, N/A; Fits 1994-1996 Oldsmobile Cutlass Ciera, N/A; and additional Buick LeSabre, Cadillac DeVille, Oldsmobile 88, Pontiac Bonneville, and Chevrolet Caprice applications. The Four Seasons 37220 harness connector is also listed for several Cadillac, Oldsmobile, and Pontiac relay connector locations, including compressor relay, fan motor relay, and A/C compressor clutch control harness ground connections.

What It Helps Fix

• Broken or heat-damaged HVAC relay connector housing
• Loose electrical contact at the A/C compressor clutch control circuit
• Intermittent fan motor relay operation caused by connector wear
• Corrosion or terminal damage at the harness interface
• Failed blower motor relay connector on supported applications

Installation Notes

Verify connector shape, terminal count, and terminal gender before installation. Match the existing harness layout and vehicle-specific notes, especially on applications marked with shroud, under-hood mounting, or manual A/C references. Confirm the original connector style on the vehicle before replacing the damaged HVAC relay connector.

Quality Assurance

Four Seasons supplies HVAC electrical connector components for service replacement use. The 37220 part number is cataloged with multiple interchange references and broad vehicle coverage for verified fitment matching.