Standard Ignition SLS-122 Brake Light Switch

Brand Standard Ignition SLS-122
Connector Gender Female
Terminal Gender Male
Terminal Type Blade Terminals
Fits Ford and Mercury · 14 vehicles

Robust design. Built with high-grade materials for durability in demanding service.

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

OE-quality manufacturing. Made by a global original-equipment ignition products manufacturer.

Cross-references 1S5379, 53-54503 and 88924601 for the same application. See all 9.

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Brake Light Switch for Ford Fiesta and Mercury Capri

Standard Ignition SLS-122 is a brake light switch built for direct electrical switching performance in service applications. It uses a female connector with one connection point, male blade terminals, and a durable housing design to support consistent stop lamp operation on select Ford Fiesta and Mercury Capri models.

Key Features

  • Brake light switch for stop lamp circuit control
  • Female connector with 1 connector cavity
  • 2 male blade terminals for straightforward electrical connection
  • Built with copper alloy conductors for low-resistance current flow
  • Spring and contact design helps reduce arcing during operation
  • 100% tested for mechanical and electrical switching performance
  • Standard Ignition SLS-122 for select Ford Fiesta and Mercury Capri applications

Detailed Description

Standard Ignition SLS-122 is engineered as a replacement brake light switch for vehicles that rely on accurate stop lamp activation from the pedal switch circuit. The design uses high-grade materials, including copper alloy conductors and a durable housing construction, to maintain stable electrical transfer and long service life. For technicians servicing a 1978-1980 Ford Fiesta or a 1971-1977 Mercury Capri, this SLS-122 switch provides a direct-fit solution for restoring brake lamp function. This part cross-references Standard Motor Products (e.g., S719, SL301) for the same application.

What It Helps Fix

  • Brake lights that do not illuminate when the pedal is pressed
  • Intermittent stop lamp operation
  • Electrical switching issues at the brake pedal circuit
  • Arcing-related contact wear inside the switch
  • Poor conductivity caused by worn internal switch components

Installation Notes and Tips

Verify connector style, terminal layout, and vehicle application before installation. The SLS-122 uses a female connector and male blade terminals, so matching the existing harness and switch interface is important for proper fitment. Confirm brake pedal switch adjustment and test stop lamp operation after installation on Ford Fiesta and Mercury Capri vehicles.

Quality Assurance

Standard Ignition manufactures this brake light switch with complete quality control from component production through final assembly. Each SLS-122 unit is tested to confirm mechanical action and electrical switching performance before release.

This part fits 14 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1980FordFiesta——N/A—
1979FordFiesta——N/A—
1978FordFiesta——N/A—
1977MercuryCapri——N/A—
1976MercuryCapri——N/A—
1975MercuryCapri2.3LL4N/A—
1975MercuryCapri2.8LV6N/A—
1974MercuryCapri——N/A—
1973MercuryCapri——N/A—
1972MercuryCapri2.0LL4N/A—
1972MercuryCapri1.6LL4N/A—
1972MercuryCapri2.6LV6N/A—
1971MercuryCapri2.0LL4N/A—
1971MercuryCapri1.6LL4N/A—
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
1S537953-5450388924601D2RY13480AEG621F4826S719SL301V25-73-0021