Standard Ignition US-509 Ignition Switch

Ignition Switch for Ford Escort and Mercury Tracer

Standard Ignition US-509 is a column-mounted ignition switch and lock assembly designed for direct replacement on select Ford and Mercury compact cars. It is built with aluminum and copper alloy conductors to support consistent electrical transfer and dependable mechanical operation.

• Fits 1997-2003 Ford Escort, N/A
• Fits 1997-1999 Mercury Tracer, N/A
• OE-spec coded ignition switch and lock assembly with keys
• Bolt-on attachment method for column mounting
• Rectangular 2-connector design with 8 blade terminals
• Female and male connector/terminal configuration
• Mounting bracket(s) included

Product Details

The Standard Ignition US-509 ignition switch is engineered to match original equipment specifications for fit, form, and function. It uses high-grade aluminum and copper alloy conductors to help reduce resistive losses while maintaining stable switching performance. This makes it a practical replacement for worn or failing ignition components on Ford Escort and Mercury Tracer models. This part number, US-509, is also a useful reference when verifying application coverage and ordering the correct column ignition switch assembly.

This part cross-references Standard Motor Products (e.g., US-509) for the same application.

Common Problems It Can Address

• Intermittent no-start conditions caused by worn ignition switch contacts
• Key turn issues related to a damaged lock assembly
• Electrical accessory loss when the switch no longer transfers power correctly
• Starting problems from poor internal switching continuity
• Column ignition operation concerns on aging Ford Escort and Mercury Tracer vehicles

Installation Notes and Tips

US-509 mounts to the steering column with a bolt-on design and uses a coded lock assembly. Verify connector shape, terminal count, and column mounting location before installation. Because instructions are not included, compare the original switch and lock assembly to the replacement unit and confirm key operation before final assembly. The part number US-509 should be matched to the vehicle’s original configuration for proper fitment.

Quality Assurance

Standard Ignition states that this switch is tested for proper fit, form, and function. It is manufactured to OE specifications and built for mechanical durability and electrical conductivity in service applications.