Standard Ignition US-252 Ignition Switch

Ignition Switch for Column-Mount Applications

Standard Ignition US-252 is a column-mounted ignition switch built for dependable electrical switching and consistent fit. It is a direct replacement option for select Cadillac and Buick applications, including 1989-1993 Cadillac Allante, 1989-1991 Cadillac Eldorado, 1989-1991 Cadillac Seville, 1989 Buick Reatta, and 1989 Buick Riviera.

Key Features

• Column-mounted ignition switch with bolt-on attachment method
• 1 rectangular male connector
• 10 female blade terminals for secure electrical interface
• Black, silver, and white housing with aluminum and plastic finish
• Copper alloy conductors for strong electrical conductivity and reduced resistance
• 100% tested for mechanical and electrical switching performance
• Standard Ignition US-252 cross-references 1S6252 and CS586 for the same application

Detailed Description

Standard Ignition US-252 is engineered for service replacement where reliable ignition switch operation is required. The robust construction and material selection support proper fit and function, while the copper alloy conductor design helps maintain stable electrical transfer through the switch. This part number is a practical choice for owners and technicians servicing Cadillac Allante, Cadillac Eldorado, Cadillac Seville, Buick Reatta, and Buick Riviera models listed in the fitment data.

As a Standard Ignition US-252 replacement ignition switch, it is built to match the electrical and mechanical demands of the original application. The column mounting location, rectangular connector shape, and blade-terminal layout are important details for confirming the correct part before installation.

Common Issues This Part May Resolve

• Intermittent no-start condition caused by worn ignition switch contacts
• Accessory or ignition circuit loss during key operation
• Electrical switching problems from heat- or age-related internal wear
• Key position inconsistency when turning the ignition cylinder assembly
• Starting or power delivery faults traced to the column ignition switch

Installation Notes and Tips

Verify the connector style, terminal count, and column mounting location against the original switch before installation. Inspect the harness connector and surrounding column components for wear, corrosion, or heat damage, and confirm proper key-position operation after installation. For best results, compare the existing unit to the Standard Ignition US-252 and confirm vehicle-specific fitment for your Cadillac or Buick application.

Quality Assurance

Standard Ignition states that this ignition switch is built with high-grade materials and tested for both mechanical and electrical switching performance. The design uses copper alloy conductors to support consistent conductivity and low resistive loss.