Standard Ignition S-640 Relay Control Module Connector

Relay Control Module Connector for Ford and Dodge Applications

Standard Ignition S-640 is a relay control module connector built for electrical repair work where a damaged pigtail or worn terminal can interrupt circuit performance. It uses high-grade materials to support strong conductivity and consistent connections in demanding automotive wiring repairs.

With fitment across Ford, Mercury, Lincoln, Dodge, Chrysler, and Volvo applications, this S-640 connector is a practical choice for restoring factory-style electrical connections on vehicles such as the Ford F-150, Ford Bronco, and Ford E-150 Econoline.

Key Features

• Male connector with a single connector body
• Female blade terminals for secure electrical contact
• 3-wire pigtail assembly for relay control module repair
• Built with materials selected to support conductivity and connection integrity
• Standard Ignition S-640 for electrical connector replacement work
• Fits a wide range of Ford, Mercury, Lincoln, Dodge, Chrysler, and Volvo models

Detailed Description

The Standard Ignition S-640 relay control module connector is designed for technicians replacing damaged electrical connectors in body, lighting, and control circuits. It is especially relevant for long-running Ford truck and van platforms, including Ford F-150, Ford F-250, Ford Bronco, and Ford E-150 Econoline applications, where connector wear can affect relay operation and harness reliability. This part cross-references Monroe Shocks & Struts (e.g., 5609) for the same application.

Standard Ignition builds its pigtails and sockets with a focus on dependable electrical contact and repair-oriented fitment. The S-640 is a direct replacement-style connector for restoring a failed relay control module connection without changing the surrounding harness design.

What It Helps Fix

• Broken or heat-damaged relay control module connector terminals
• Intermittent electrical connection at the harness interface
• Corrosion-related terminal contact loss
• Worn pigtail wiring at the connector end
• Electrical faults on Ford truck, van, and passenger car wiring repairs

Installation Notes and Tips

Verify terminal orientation, wire color placement, and connector indexing before splicing into the harness. Match the existing circuit layout on the vehicle side and confirm the application against the original connector style. Fits 1983-1992 Ford F-150, N/A; Fits 1977-1992 Ford E-150 Econoline, N/A; Fits 1975-1980 Dodge D100, N/A; Fits 1972-1980 Ford Thunderbird, N/A; Fits 1982-1984 Lincoln Town Car, N/A.

For best results, inspect adjacent wiring for heat damage or brittle insulation before completing the repair. This part number is also referenced as Standard Ignition S-640 in catalog listings for electrical connector replacement.

Quality Assurance

Standard Ignition supports this connector with decades of electrical parts development focused on technician needs and repair accuracy. The brand’s pigtails and sockets are engineered to address common original-equipment connector failure points with materials chosen for reliable conductivity and consistent connection quality.