HomeElectrical, Lighting and Body > SwitchesStandard Ignition SLS-91 Brake Light Switch
Part #: SLS-91

Standard Ignition SLS-91 Brake Light Switch

⚙️ 20 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford, Lincoln, and Mercury, Thunderbird, Continental, Mark V, LTD, Grand Marquis, Custom 500, Granada, Marquis, and Mark IV
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Reliable Brake Light Switch for Ford, Lincoln, and Mercury Vehicles

The Standard Ignition SLS-91 brake light switch is designed to provide consistent and accurate brake light activation for select Ford, Lincoln, and Mercury models. Engineered with precise connector and terminal specifications, this switch ensures proper electrical function and safety compliance.

Key Features of the Standard Ignition SLS-91 Brake Light Switch

  • Connector Gender: Male for secure and proper connection
  • Single Connector Quantity for straightforward installation
  • Functions as a brake light switch to activate brake lights reliably
  • Two Male Blade Terminals for stable electrical contact
  • Terminal Type: Blade terminals designed for durability and ease of use

Detailed Product Description

The Standard Ignition SLS-91 brake light switch is specifically engineered to fit Ford, Lincoln, and Mercury vehicles including the Continental, Grand Marquis, LTD, Marquis, and Thunderbird models. This switch features a male connector and two male blade terminals, ensuring a secure and reliable electrical connection within the vehicle’s brake light circuit. The single connector design simplifies installation and replacement, reducing downtime and potential wiring issues. The blade terminal type is commonly used in automotive electrical systems for its durability and ease of maintenance.

Common Applications and Issues Addressed

  • Restores brake light functionality when the original switch fails
  • Eliminates intermittent brake light activation problems
  • Resolves issues with brake lights staying on continuously
  • Prevents electrical faults related to worn or damaged terminals
  • Ensures compliance with vehicle safety standards for brake light operation

Installation Notes and Tips

  • Verify compatibility with your specific Ford, Lincoln, or Mercury model before installation
  • Disconnect the vehicle battery to prevent electrical shorts during replacement
  • Ensure the male connector and blade terminals are clean and free of corrosion
  • Securely connect the switch to avoid loose connections that can cause malfunction
  • Test brake light operation after installation to confirm proper function

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The SLS-91 brake light switch undergoes rigorous quality control to ensure consistent operation. Warranty coverage details should be confirmed with the product documentation or supplier, as they may vary.

BrandStandard Ignition
Part NumberSLS-91
Connector GenderMale
FunctionsSwitch
Terminal GenderMale
Terminal TypeBlade

This part fits 20 vehicles. Search below:

YearMakeModelPositionNotes
1979FordThunderbirdN/A
1979LincolnContinentalN/A
1978FordLTDN/A
1978FordThunderbirdN/A
1978LincolnContinentalN/A
1978MercuryGrand MarquisN/A
1977FordLTDN/A
1977FordThunderbirdN/A
1977LincolnContinentalN/A
1977MercuryGrand MarquisN/A
1977MercuryMarquisN/A
1976FordLTDN/A
1976FordThunderbirdN/A
1976LincolnContinentalN/A
1976MercuryGrand MarquisN/A
1976MercuryMarquisN/A
1975FordThunderbirdN/A
1975LincolnContinentalN/A
1975MercuryGrand MarquisN/A
1975MercuryMarquisN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

123096101S95674-85753-5450058100C9AZ13480AE860F4822S298SL211

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.