Four Seasons 37203 HVAC Control Vacuum Harness Connector

Four Seasons 37203 Harness Connector

The Four Seasons 37203 harness connector is a female HVAC electrical repair connector for 5-terminal blade applications. It is used on HVAC control vacuum circuits, blower motor relay circuits, and compressor cut-out relay connections across a wide range of Chrysler, Dodge, Plymouth, GM, Ford, and select import vehicles.

Four Seasons Harness Connector line parts are built for electrical repair work where the original connector body is damaged, heat-affected, or no longer locks securely to the mating component. This connector uses a rectangular blade-style female terminal layout with a 6-inch wire length for service replacement work.

Key Features

• Female harness connector with 5 blade terminals
• Rectangular connector shape for HVAC relay and switch repair
• 6-inch wire length for connector replacement work
• Used in HVAC control vacuum, blower relay, and compressor relay circuits
• Cross-references Bosch 7900 and Gates 350010 for the same application
• Part number 37203 for catalog and fitment lookup

Detailed Description

Four Seasons 37203 is a 5-terminal female harness connector designed for HVAC electrical repair applications where the original connector has failed. It is commonly used as a replacement connector for damaged A/C compressor cut-out switch harness connectors, blower motor high-speed relay connectors, and HVAC control vacuum harness connectors. Fitment includes vehicles such as the 2003 Dodge Dakota, 2001 Chevrolet Monte Carlo, and many Chrysler, Dodge, Plymouth, Buick, Cadillac, Chevrolet, GMC, Oldsmobile, Pontiac, Ford, Lincoln, Mercury, and Volkswagen models from 1961 through 2003. Search terms such as HVAC control vacuum harness connector, blower motor relay connector, and 5 terminal female connector all apply to this part.

Compatible vehicle examples include Fits 2003 Dodge Dakota, N/A; Fits 2001 Chevrolet Monte Carlo, N/A; and Fits 1975-1982 Ford F-100, N/A. The Four Seasons 37203 part number is also listed in interchange data for multiple OE and aftermarket references.

Common Repair Uses

• Broken or heat-damaged HVAC relay connector housing
• Loose or corroded female blade terminal connection
• Failed blower motor relay or high-speed relay plug
• Damaged A/C compressor cut-out switch harness connector
• Intermittent HVAC electrical connection at the relay or switch

Installation Notes

Match the connector shape, terminal count, and terminal gender before installation. Verify the vehicle’s original circuit function, since this connector appears in multiple HVAC and relay applications across different makes and model years. Confirm wire routing and terminal indexing against the existing harness before splicing or terminating the repair lead.

Quality Assurance

Four Seasons supplies this harness connector as a service replacement electrical component for HVAC repair applications. The 37203 connector is cataloged for broad OE-style fitment coverage and is supported by interchange references for application matching.