Standard Ignition US-850 Ignition Lock Cylinder and Switch

Ignition Lock Cylinder and Switch for Mazda Miata

Standard Ignition US-850 is an ignition lock cylinder and switch assembly for select 2004-2005 Mazda Miata models without an immobilizer. It combines column-mounted ignition control with a bolt-on design, making it a direct replacement for vehicles that use a 4-position Lock-Acc-On-Start switch layout.

Key Features

• Fits 2004-2005 Mazda Miata, column mount, w/o Immobilizer
• Standard Ignition US-850 ignition lock cylinder and switch
• Bolt-on attachment method for secure installation
• 4 switch positions: Lock, Accessory, On, Start
• Female connector design with 2 rectangular connectors
• 10 male blade terminals for vehicle-specific electrical connection
• Keys included for replacement convenience

Detailed Description

The Standard Ignition US-850 is built for ignition systems that require a column-mounted lock cylinder and switch assembly with a 4-position operating sequence. It is a practical replacement for Mazda Miata ignition components when the original switch or lock cylinder shows wear, intermittent operation, or key-related failure. This part cross-references CS1210 and KS7210 for the same application. The US-850 is also listed for 2004-2005 Mazda Miata, helping buyers identify the correct ignition lock cylinder and switch for the vehicle’s non-immobilizer configuration.

Common Issues This Part Can Address

• Key turns but ignition response is inconsistent
• Worn lock cylinder causes sticking or binding
• Accessory, ON, or START positions do not engage correctly
• Electrical contact wear creates intermittent starting or power loss
• Damaged ignition switch housing affects column-mounted operation

Installation Notes and Tips

Verify that the vehicle is a 2004-2005 Mazda Miata without an immobilizer before ordering. Match the column mounting style, connector shape, terminal count, and 4-position switch layout to the original part. Because this assembly uses a bolt-on attachment method and blade terminals, careful alignment and connector inspection are important during installation. Confirm key operation and switch position function after installation.

Quality Assurance

Standard Ignition supplies replacement ignition components for service applications that require accurate fit and electrical interface. The US-850 is identified by part number US-850 and is cataloged for direct application matching on the listed Mazda Miata vehicles.