Standard Ignition SLS-373 Brake Light Switch

Brand Standard Ignition SLS-373
Color Blue, White
Connector Gender Female
Finish Plastic
Functions Stoplight Switch
Terminal Gender Male
Terminal Type Blade
Fits Lincoln, Ford, and Mercury · 13 vehicles

OE-quality construction. Built with brass or high-impact composite housings for durability.

Reduced arcing design. Special spring and contact arrangement helps extend service life.

Copper alloy conductors. Deliver strong conductivity with low resistive losses.

Cross-references 1S10919, 2BLS0018 and 6E5Z13480A for the same application. See all 9.

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Brake Light Switch for Ford, Lincoln, and Mercury

Standard Ignition SLS-373 is a brake light switch built for dependable stoplamp signal control in select Ford, Lincoln, and Mercury applications. It uses a 4-blade male terminal layout with a female connector and a plastic finish, making it a direct-fit electrical replacement for vehicles such as the Ford Fusion, Mercury Milan, and Lincoln MKZ.

Key Features

  • Brake light switch / stoplight switch function
  • Blue and white housing color with plastic finish
  • 1 female connector
  • 4 male blade terminals
  • Copper alloy conductors for strong electrical conductivity
  • Spring and contact design that reduces arcing for longer service life
  • 100% tested for mechanical and electrical switching performance

Detailed Description

Standard Ignition SLS-373 is engineered for stoplamp circuit operation in vehicles that rely on a precise brake pedal signal. The switch uses high-grade materials and a robust housing design to handle daily service demands, while the internal spring and contact arrangement helps limit arcing during repeated activation. Copper alloy conductors support low-resistance current flow for consistent brake light response. This part cross-references 6E5Z13480A and SW6452 for the same application. It is a practical replacement choice for 2006-2009 Ford Fusion, 2006-2009 Mercury Milan, 2006 Lincoln Zephyr, and 2007-2010 Lincoln MKZ applications. Standard Ignition SLS-373 is also listed under part number SLS-373 for easy catalog matching.

What It Helps Fix

  • Brake lights that stay off when the pedal is pressed
  • Intermittent stoplamp operation
  • Brake lamp switch electrical faults
  • Delayed or inconsistent brake light activation
  • Warning lights related to brake pedal switch input

Installation Notes and Tips

Verify connector style, terminal count, and vehicle application before installation. This switch uses a female connector with 4 male blade terminals, so the harness connection should match exactly. Confirm the brake pedal switch mounting and electrical indexing on the vehicle before replacing the original unit. For fitment, use the vehicle-specific listing: Fits 2006-2009 Ford Fusion, N/A; Fits 2006-2009 Mercury Milan, N/A; Fits 2006 Lincoln Zephyr, N/A; Fits 2007-2010 Lincoln MKZ, N/A.

Quality Assurance

Standard Ignition manufactures this brake light switch with controlled quality processes from component selection through final testing. Each unit is tested for mechanical and electrical switching performance to help ensure consistent operation in service.

This part fits 13 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2010LincolnMKZN/A—
2009FordFusionN/A—
2009LincolnMKZN/A—
2009MercuryMilanN/A—
2008FordFusionN/A—
2008LincolnMKZN/A—
2008MercuryMilanN/A—
2007FordFusionN/A—
2007LincolnMKZN/A—
2007MercuryMilanN/A—
2006FordFusionN/A—
2006LincolnZephyrN/A—
2006MercuryMilanN/A—
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
1S109192BLS00186E5Z13480A901233SL923SL2113SW6452SW8240V25-73-0138