STANDARD MOTOR PRODUCTS SLS139T Stoplight Switch 025623209692

( Brand: Standard Motor Products ), ( Manufacturer Part Number: SLS139T ), ( Part Type: Switch Motor ), ( Operation Mode: Motor ), ( Current Rating: 0.01 Amps ), ( Operating Voltage: 0.01 Volts ), ( Contact Type: Normally Open ), ( Connector Type: Screw ), ( Switch Type: Toggle ), ( Circuit Type: 1-way ), ( Mounting Type: Panel Mount ), ( Actuator Type: Hinge Lever ), ( Lower Temperature Rating: 0.01 Degrees Celsius ), ( Control Method: Touch ), ( Connectivity Protocol: X-10 ), ( Compatible With Vehicle Type: Car, Truck, Suv, Etc. ), ( Control Type: Basic ), ( Smart Home Compatibility: Not Smart Home Compatible ), ( Color: Assorted ), ( Item Dimensions: 3.6 X 2.1 X 1.3 Inches ), ( Unit Count: 1.0 Count ), ( Contact Material: Metal ), ( International Protection Rating: Ip00 ), ( Global Trade Identification Number: 00025623209692 ), ( UPC: 025623209692 ), ( Item Type Name: Stoplight Switch ), ( Item Weight: 0.02 Pounds )

Review STANDARD MOTOR PRODUCTS Stoplight Switch

The **Standard Motor SLS139T Stoplight Switch** is a robust, high-performance automotive electrical component designed to provide reliable and precise control over vehicle lighting systems, particularly in applications requiring a clear, tactile response for safety-critical functions. Engineered with a durable **plastic housing** and a **metal-encased actuator**, this switch is built to withstand the demands of frequent use, harsh environmental conditions, and prolonged exposure to vibration, ensuring long-term dependability in both passenger vehicles and commercial fleets. Its **momentary or latching operation** (depending on wiring configuration) allows for versatile integration into stoplight, turn signal, or hazard light circuits, offering flexibility for customization based on specific vehicle requirements. The **self-cleaning contacts** within the switch minimize corrosion and oxidation, reducing the risk of intermittent failures that could compromise visibility and safety on the road. With a **standard 13.5mm mounting hole diameter**, it fits seamlessly into most existing switch housings, making it an ideal replacement or upgrade for OEM or aftermarket installations. Whether used in modern sedans, rugged trucks, or high-performance vehicles, the SLS139T delivers consistent performance, clear feedback, and a secure connection, ensuring that critical lighting functions operate with precision whenever they are needed. Built to meet or exceed industry standards for durability and electrical performance, this switch exemplifies reliability without sacrificing ease of installation or functionality.

### Pros and Cons of buying a Standard Motor SL139T Stoplight Switch

1. **Reliability and Durability** The SL139T is a well-regarded stoplight switch known for its robust construction, often used in automotive and industrial applications. It is designed to withstand frequent use without failing, making it a dependable choice for vehicles that require consistent stoplight operation.

2. **Compatibility** This switch is designed to fit standard wiring configurations commonly found in older vehicles, particularly those with mechanical stoplight systems. It is widely used in classic cars, trucks, and some modern vehicles with compatible wiring setups.

3. **Easy Installation** The SL139T is a straightforward plug-and-play switch. It typically requires minimal modifications to the wiring harness, making it accessible for DIY enthusiasts or those without extensive electrical knowledge.

4. **Cost-Effective** Compared to some high-end or specialized stoplight switches, the SL139T is reasonably priced. It offers good value for money, especially when replacing a faulty or outdated switch.

5. **Compatibility with Aftermarket Mods** Many aftermarket brake light systems, LED conversions, or auxiliary brake light setups can integrate with the SL139T, making it a versatile option for customization.

6. **Positive User Feedback** Many users report that this switch operates smoothly without issues like sticking or intermittent failures, which are common problems with cheaper or lower-quality alternatives.

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1. **Limited Modern Compatibility** While the SL139T works well with older vehicles, it may not be compatible with newer cars that use advanced electronic brake light systems (e.g., those with CAN bus or adaptive cruise control integration). Attempting to use it in such vehicles could lead to malfunctions or safety hazards.

2. **No Built-In Diagnostics** Unlike some modern switches, the SL139T lacks diagnostic features (e.g., fault codes or self-testing capabilities). If the switch fails, troubleshooting may require more time and effort compared to newer models with built-in diagnostics.

3. **Potential for Overheating** In high-performance or heavy-duty applications, the SL139T may not handle continuous high current loads as efficiently as a switch designed for such conditions. Overheating could occur if the wiring or switch is not properly rated for the vehicle s electrical demands.

4. **Wiring Constraints** Some vehicles may require additional wiring modifications or relays to accommodate the SL139T, especially if the original wiring is not compatible. This could add complexity to the installation process.

5. **Availability of Parts** While widely available, the SL139T may not be as easily accessible in all regions or through all suppliers as more universally compatible switches. Stock shortages or discontinued production could pose challenges for long-term use.

6. **No Backlighting Option** Unlike some modern switches, the SL139T does not typically include built-in backlighting. If you prefer illuminated switches for visibility in low-light conditions, you may need to source an alternative.

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The Standard Motor SL139T stoplight switch is an excellent choice for **classic cars, trucks, and vehicles with mechanical or older-style brake light systems**. Its reliability, ease of installation, and cost-effectiveness make it a practical option for enthusiasts and mechanics working on non-electronic or low-tech vehicles. However, it is **not ideal for modern cars with advanced electronic braking systems**, as compatibility issues could arise.

For **new vehicles or those with complex electrical setups**, investing in a switch designed for modern applications (e.g., OEM replacements or high-end aftermarket switches with diagnostic features) would be more appropriate. The SL139T strikes a balance between affordability and performance for its intended use but may fall short in more demanding scenarios.

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- You are working on a **classic car, older truck, or vehicle with a mechanical stoplight system**.

- You need a **reliable, budget-friendly switch** for a straightforward installation.

- Your vehicle s wiring is **compatible with standard stoplight switches** and does not require advanced electronics.

- You are modifying a **modern car with electronic brake systems** (e.g., those with ABS, traction control, or adaptive cruise control).

- You require **diagnostic features or backlighting** in your switch.

- Your vehicle has **high current demands** that could stress the switch s capacity.

For **modern vehicles**, prioritize switches that are **OEM-compatible or designed for electronic systems**. For **classic or simple applications**, the SL139T remains a solid, time-tested choice. Always verify wiring compatibility and consult your vehicle s electrical schematic before installation.

Details:

Model Number: SLS139T. Country of Origin: USA.

part #: sls139t prices

• $19.95-$32.85

specifications dccsystemsacc:

• brand: Standard Motor Products
• mpn: Sls139t
• part type: Switch Motor
• operation mode: Motor
• current rating: 0.01 Amps
• operating voltage: 0.01 Volts
• contact type: Normally Open
• connector type: Screw
• switch type: Toggle
• circuit type: 1-way
• mounting type: Panel Mount
• actuator type: Hinge Lever
• lower temperature rating: 0.01 Degrees Celsius
• control method: Touch
• connectivity protocol: X-10
• compatible with vehicle type: Car, Truck, Suv, Etc.
• control type: Basic
• smart home compatibility: Not Smart Home Compatible
• color: Assorted
• item dimensions: 3.6 X 2.1 X 1.3 Inches
• unit count: 1.0 Count
• contact material: Metal
• international protection rating: Ip00
• global trade identification number: 00025623209692
• upc: 025623209692
• item type name: Stoplight Switch
• item weight: 0.02 Pounds

payments dccsystemsacc:

• wallet: Paypal
• credit card: Discover
• other

offer dccsystemsacc:

• options: Ship-to-home
• started: May 10, 2026
• quantity: 1
• sold: 0
• availability: In Stock

general dccsystemsacc:

• condition: New
• model Railroads Trains > Power Control > Control Device Parts

seller dccsystemsacc:

• rating: 99.0%
• # reviews: 2817
• city: Miami, Florida

returns dccsystemsacc:

• policy: No Returns

shipping dccsystemsacc:

• transit: 3-6 Days
• class: Standard
• service: Standard
• type: Fixed
• cost: $0.00

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