Standard Ignition DS-340 Headlight Switch

Headlight Switch for Ford Mustang

The Standard Ignition DS-340 headlight switch is built for direct replacement in select Ford Mustang applications. It uses copper alloy conductors for strong electrical flow and is 100% tested for mechanical and electrical switching performance.

Compatible with 1987-1993 Ford Mustang models equipped with fog lights, this DS-340 headlight switch supports reliable headlight control in 12-volt systems. It is a direct, snap-fit replacement with a female 2-connector layout and an 8-blade male terminal design.

Key Features

• Direct, snap-fit attachment method for straightforward replacement
• Female 2-connector design with rectangular connector shape
• 8 male blade terminals for the specified electrical interface
• 12-volt headlight switch for select Ford Mustang electrical systems
• Copper alloy conductors for low resistive loss and stable conductivity
• 100% tested for mechanical and electrical switching performance

Detailed Description

Standard Ignition DS-340 is a headlight switch engineered for service replacement where dependable switching and consistent electrical contact matter. The robust housing and high-grade materials are intended to meet the demands of routine repair work, while the copper alloy conductor design helps maintain efficient current transfer. This part number DS-340 is a direct replacement for select Ford Mustang models, including 1987-1992 Ford Mustang with fog lights and 1993 Ford Mustang equipped with fog lights. This part cross-references Standard Ignition DS-340 applications with OE-style replacements such as E7ZB11654BC and HL6596 for the same application.

Common Problems This Part Can Address

• Headlights that do not switch on or off correctly
• Intermittent lighting operation at the dash switch
• Worn internal contacts causing inconsistent electrical response
• Fog-light-equipped Mustang lighting control issues tied to the headlight switch
• Heat-related or age-related switch failure in 12-volt systems

Installation Notes and Tips

Verify the vehicle is a 1987-1993 Ford Mustang with fog lights before ordering. Match the connector shape, terminal count, and attachment style to the original switch before installation. Confirm the electrical connector is fully seated and inspect the surrounding harness for wear or corrosion during replacement. The DS-340 is a direct replacement part number for the listed applications, including Ford Mustang headlight switch service on fog-light-equipped vehicles.

Quality Assurance

Standard Ignition states that this switch is fully tested for both mechanical action and electrical performance. The design uses durable materials and copper alloy conductors to support dependable operation in service applications.