Standard Ignition US-135 Ignition Switch

Ignition Switch for Ford, Mercury, and Lincoln

Standard Ignition US-135 is an ignition switch built for column-mounted applications that demand consistent electrical switching and secure connector engagement. It is a direct-fit service part for select Ford Taurus, Mercury Sable, and Lincoln Continental models from the late 1980s.

• Column-mounted ignition switch with snap-fit attachment method
• 1 rectangular female connector for straightforward harness connection
• 12 male blade terminals for proper electrical interface
• Copper alloy conductors for low-resistance electrical flow
• 100% tested for mechanical and electrical switching performance
• Built with high-grade materials for service-professional use

Fitment and Application Details

Compatible with 1986-1989 Ford Taurus, 1986-1989 Mercury Sable, and 1988 Lincoln Continental. This Standard Ignition US-135 ignition switch is designed for vehicles using a column-mounted switch layout, making it a practical replacement for worn or failing ignition switch assemblies in these applications.

This part cross-references Standard Ignition US-135 with OE-style replacement numbers such as 1S6175 and KS6691 for the same application.

Common Problems This Part Can Address

• Intermittent no-start conditions caused by worn switch contacts
• Accessory or ignition circuits that do not power on reliably
• Key-turn operation with inconsistent electrical response
• Electrical switching faults related to damaged internal conductors
• Column ignition switch issues on older Ford, Mercury, and Lincoln vehicles

Installation Notes and Tips

Verify the connector style, terminal count, and column mounting location before installation. Match the vehicle year and model exactly, since Ford Taurus, Mercury Sable, and Lincoln Continental applications can vary by ignition system configuration. Inspect the harness connector and related column components for heat damage, corrosion, or looseness before installing the new switch.

Quality Assurance

Standard Ignition builds this switch with durable materials and copper alloy conductors, then tests each unit for mechanical and electrical switching performance to help ensure proper fit and function.