Standard Ignition US-45 Ignition Switch

Ignition Switch for Classic Ford and Mercury Applications

The Standard Ignition US-45 ignition switch is built for column-mounted applications that demand consistent electrical switching and a precise mechanical feel. It uses copper alloy conductors for strong conductivity and low resistive loss, with a design focused on proper fit and dependable operation.

Compatible With 1968-1970 Ford and Mercury vehicles including Ford Mustang, Ford F-100, Ford F-250, Ford F-350, Ford LTD, Mercury Cougar, and Mercury Marquis applications.

Key Features

• Column-mounted ignition switch with bolt-on attachment method
• Female rectangular connector with 1 connector interface
• 6 male terminals with pin and bullet terminal types
• Black and gray housing with cast iron and plastic finish materials
• Copper alloy conductors for efficient electrical transfer
• 100% tested for mechanical and electrical switching performance

Detailed Product Overview

Standard Ignition US-45 is an ignition switch for classic Ford and Mercury vehicles that use a 6-pin column-mounted design. It is engineered to match the electrical and mechanical requirements of the original switch layout, helping restore reliable start, accessory, and ignition function in vehicles such as the 1968-1969 Ford Mustang, 1968-1969 Ford LTD, and 1968-1969 Mercury Cougar. This part number, US-45, is built with durable materials and tested to verify switching performance before it leaves the factory.

This part cross-references Standard Motor Products (e.g., CS51, SW1054) for the same application.

Common Problems This Part Can Address

• Intermittent no-start condition caused by worn ignition switch contacts
• Loss of accessory or ignition power at the column switch
• Hard starting related to poor internal electrical continuity
• Switch failure from heat, wear, or age in classic vehicle electrical systems
• Unreliable key-to-starter signal in 1968-1970 Ford and Mercury models

Installation Notes and Tips

Fits 1970 Ford E-100 Econoline, column; 1970 Ford F-100, column; 1970 Ford F-250, column; 1970 Ford F-350, column; 1969 Ford E-100 Econoline, column; 1968-1969 Ford F-100, column; 1968-1969 Ford F-250, column; 1968-1969 Ford F-350, column; 1968-1969 Ford LTD, column; 1968-1969 Ford Mustang, column; 1968-1969 Ford Thunderbird, column; 1968-1969 Lincoln Continental, column; 1968-1969 Mercury Colony Park, column; 1968-1969 Mercury Cougar, column; 1969 Mercury Marauder, column; 1968-1969 Mercury Marquis, column; 1968-1969 Mercury Montego, column.

Verify the connector style, terminal count, and column mounting location before installation. The US-45 is specified for 6-pin applications, so matching the original switch configuration is important for proper operation.

Quality Assurance

Standard Ignition builds this switch with high-grade materials and copper alloy conductors, then tests each unit for both mechanical action and electrical switching performance. That process supports consistent fit and function in classic Ford Mustang, Ford F-100, and Mercury Cougar applications.