Standard Ignition SLS-304 Brake Light Switch

Brand Standard Ignition SLS-304
Connector Gender Female
Terminal Gender Male
Terminal Type Blade Terminals
Fits Scion and Toyota · 6 vehicles

Push-in design. Simplifies installation with a secure, spring-activated fit.

Plastic housing. Lightweight construction for dependable electrical switching.

Brake light switch. Controls the brake lamp circuit with a 12-volt, blade-terminal setup.

Cross-references Standard Ignition SLS-304, 8434019015 and JA4453 for the same application. See all 5.

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Brake Light Switch for Toyota Celica and Scion iQ

Standard Ignition SLS-304 is a 12-volt brake light switch built with a plastic body, spring activation, and a push-in attachment method. It uses a single rectangular female connector with two male blade terminals for a direct electrical connection in the brake pedal circuit.

Key Features

  • Brake light switch for brake pedal signal control
  • 12-volt electrical design
  • Spring-activated switch operation
  • Push-in mounting style
  • 1 rectangular connector, female gender
  • 2 blade terminals, male gender
  • Plastic housing construction
  • No wiring harness, bracket, or hardware included

Detailed Description

The Standard Ignition SLS-304 is a brake light switch used to restore proper brake pedal input to the vehicle lighting and control circuit. It is built with a spring activation style and push-in attachment method, and it connects through a rectangular female plug with two male blade terminals. This configuration supports direct replacement service on select Toyota Celica and Scion iQ applications. This part number, SLS-304, is also referenced for cross-application use under Monroe Shocks & Struts 172286.

Compatible With 2013 Scion iQ and 2001-2005 Toyota Celica, with a note that the Toyota Celica application is not compatible with vehicles equipped with cruise control. The SLS-304 is a practical choice when the original brake light switch no longer sends a consistent signal to the stop lamps or related circuits.

What It Helps Fix

  • Brake lights that stay off when the pedal is pressed
  • Brake lamps that work intermittently
  • Incorrect brake pedal switch signal to the vehicle electrical system
  • Replacement needs for a worn or damaged brake light switch
  • Brake light circuit issues on select Toyota Celica and Scion iQ models

Installation Notes and Tips

Verify connector style, terminal count, and mounting style before installation. The SLS-304 uses a push-in design and does not include a wiring harness, mounting bracket, or hardware, so reuse existing vehicle components as applicable. On 2001-2005 Toyota Celica models, confirm the vehicle is not equipped with cruise control before ordering or installing.

Quality Assurance

Standard Ignition manufactures electrical replacement parts for service applications, and the SLS-304 is built to match the listed connector, terminal, voltage, and activation specifications for the stated fitments.

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelFuel TypePositionNotes
2013ScioniQELECTRICN/A—
2005ToyotaCelica—N/ANot compatible with vehicles equipped with cruise control.
2004ToyotaCelica—N/ANot compatible with vehicles equipped with cruise control.
2003ToyotaCelica—N/ANot compatible with vehicles equipped with cruise control.
2002ToyotaCelica—N/ANot compatible with vehicles equipped with cruise control.
2001ToyotaCelica—N/ANot compatible with vehicles equipped with cruise control.
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — SLS-3048434019015JA4453SL854SL2044