Standard Ignition SLS-389 Brake Light Switch

Brand Standard Ignition SLS-389
Connector Gender Female
Terminal Gender Male
Terminal Type Blade Terminals
Fits Pontiac and Suzuki · 8 vehicles

Push-in design. Simplifies installation with a spring-activated brake light switch.

Plastic construction. Lightweight housing with a rectangular connector and blade terminals.

12-volt switch. Built for standard electrical systems with a female connector.

Cross-references Standard Ignition SLS-389, 3774085Z00 and SL939 for the same application. See all 5.

$25.89Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $25.89
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Brake Light Switch for Select Pontiac and Suzuki Models

Standard Ignition SLS-389 is a 12-volt brake light switch built for direct brake pedal signal control in select Pontiac and Suzuki applications. It uses a spring activation style, a push-in attachment method, and a rectangular single-connector design for a straightforward OE-style replacement.

Compatible with 2004-2005 Suzuki Forenza, 2005-2007 Pontiac Wave5, 2007-2008 Pontiac G3, and 2009 Pontiac G3 Wave, this brake light switch supports reliable stop-lamp operation and pedal-position signaling. The Standard Ignition SLS-389 is a practical choice when replacing a worn or inconsistent brake pedal switch.

Key Features

  • Brake light switch for 12-volt vehicle electrical systems
  • Spring-activated design for pedal input response
  • Push-in attachment method for OE-style mounting
  • 1 rectangular connector with female connector gender and male blade terminals
  • Plastic housing with no mounting bracket, harness, or hardware included
  • Direct replacement reference: Standard Ignition SLS-389

Detailed Description

This brake light switch is designed for vehicles that use a 2-terminal, blade-style electrical connection and a push-in mounting arrangement at the brake pedal assembly. Standard Ignition SLS-389 cross-references to 3774085Z00, SL939, SL2129, and SW4654 for the same application, making it a useful OE-style reference when matching an existing switch by connector and terminal layout. It is listed for 2004-2005 Suzuki Forenza, 2005-2007 Pontiac Wave5, 2007-2008 Pontiac G3, and 2009 Pontiac G3 Wave.

What It Helps Fix

  • Brake lamps that stay off when the pedal is pressed
  • Intermittent stop-light operation
  • Brake pedal switch electrical faults
  • Incorrect brake signal input to vehicle systems
  • Wear-related switch failure at the pedal assembly

Installation Notes and Tips

Verify the connector shape, terminal count, and push-in mounting style before installation. Confirm the replacement switch matches the vehicle’s brake pedal switch configuration and electrical connection style on your Pontiac G3, Pontiac G3 Wave, Pontiac Wave5, or Suzuki Forenza. Because no mounting bracket, wiring harness, or hardware is included, reuse the existing vehicle components where applicable.

Quality Assurance

Standard Ignition supplies replacement electrical components for automotive repair applications, and SLS-389 is built to match the listed fitment and connection style for the specified vehicles.

This part fits 8 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2009PontiacG3 Wave1.6LL4N/A—
2008PontiacG31.6LL4N/A—
2007PontiacG31.6LL4N/A—
2007PontiacWave51.6LL4N/A—
2006PontiacWave51.6LL4N/A—
2005PontiacWave51.6LL4N/A—
2005SuzukiForenza2.0LL4N/A—
2004SuzukiForenza2.0LL4N/A—
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-3893774085Z00SL939SL2129SW4654