OE Quality
60-Day Returns

Standard Ignition SLS-339 Brake Light Switch
Reliable Brake Light Switch for Volvo S80
The Standard Ignition SLS-339 brake light switch is designed specifically for Volvo S80 models, ensuring precise fit and dependable performance. This essential electrical component activates your brake lights safely and efficiently, maintaining proper vehicle signaling.
- Compatible with Volvo S80 vehicles
- Standard Ignition part number SLS-339
- 12-volt operation for consistent electrical performance
- Spring activation style for responsive brake light engagement
- Push-in attachment method for straightforward installation
- Two terminals: one female connector and one male pin terminal
- Rectangular female connector shape with one connector quantity
- Durable plastic construction for long-lasting use
- No hardware or mounting brackets included
- Terminal type: pins for secure electrical connection
Product Details and Specifications
The Standard Ignition SLS-339 brake light switch features a spring activation style that ensures immediate response when the brake pedal is pressed. It operates on a 12-volt system, matching the electrical requirements of the Volvo S80. The switch includes two terminals: a female connector with a rectangular shape and a male pin terminal, designed for a secure and reliable connection. The push-in attachment method simplifies installation without the need for additional hardware or mounting brackets. Constructed from durable plastic, this switch is built to withstand regular use and environmental factors under the dashboard.
Common Applications and Problem Resolution
This brake light switch is used to activate the brake lights on Volvo S80 models, ensuring that other drivers are alerted when you slow down or stop. It addresses several common issues, including:
- Brake lights not illuminating when the pedal is pressed
- Intermittent brake light operation due to faulty switch contacts
- Brake lights staying on continuously after releasing the pedal
- Failure of cruise control disengagement linked to brake switch malfunction
- Electrical connection problems caused by worn or damaged terminals
Installation Notes and Tips
Installation of the Standard Ignition SLS-339 brake light switch is straightforward due to its push-in attachment method. Ensure the vehicle’s ignition is off before beginning installation. Disconnect the battery to prevent electrical shorts. Remove the old brake light switch by disconnecting the female connector and pulling out the switch from its mounting point. Align the new switch’s terminals correctly and push it into place until it clicks securely. Verify that the brake pedal activates the switch properly and that brake lights illuminate as expected before reassembling any removed panels.
Quality Assurance and Warranty
Standard Ignition manufactures the SLS-339 brake light switch to meet or exceed OEM specifications for the Volvo S80. The part undergoes rigorous quality control to ensure reliable electrical performance and durability. While no hardware or mounting brackets are included, the switch is designed for direct replacement. Warranty coverage details should be confirmed with the distributor or retailer, as Standard Ignition typically offers limited warranties against defects in materials and workmanship.
| Brand | Standard Ignition |
| Part Number | SLS-339 |
| Connector Gender | Female |
| Terminal Gender | Male |
| Terminal Type | Pins |
This part fits 2 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2000 | Volvo | S80 | N/A | |
| 1999 | Volvo | S80 | N/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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.