The 3.9" Red 12-Diode LED Marker Light provides a compact, efficient lighting solution for exterior marker and clearance-light applications on trailers, RVs, trucks, and commercial vehicles.
Featuring 12 red LED diodes and a 3.9-inch overall size, this fixture is particularly well suited for replacement applications where customers are trying to match an existing marker light by size, illuminated color, and LED count.
The 3.9-inch format is commonly found in trailer, RV, truck, and commercial-vehicle marker and clearance lighting, making searches such as “3.9 inch red marker light,” “4 inch red trailer light,” and “12 LED clearance light” especially relevant for this product category.
12 Red LED Diodes
This fixture features 12 LED diodes producing red illumination.
LED lighting provides practical advantages for exterior vehicle marker applications, including:
- Instant illumination
- Low power consumption
- Long service life
- Reduced maintenance
- No traditional incandescent filament
The 12-diode configuration also provides customers with another specific characteristic for matching a replacement fixture.
3.9-Inch Replacement Size
The 3.9-inch size is one of the strongest search characteristics for this light.
Customers often search for replacement trailer and RV marker lights by approximate physical dimensions rather than a manufacturer part number.
Important search phrases include:
- 3.9 inch red marker light
- 3.9 inch LED trailer light
- 4 inch red marker light
- 12 LED red marker light
- 12 diode trailer light
- Red trailer clearance light
- RV red marker light
- Red truck marker light
- Replacement trailer marker light
Including both 3.9-inch and 4-inch terminology in the page copy helps capture customers who may round their measurements when searching.
Red Marker & Clearance Lighting
This fixture is designed for marker and clearance-light applications where red illumination is appropriate.
Potential applications include:
- Trailer marker lighting
- Trailer clearance lighting
- Rear-side marker lighting
- RV marker lighting
- Motorhome clearance lighting
- Truck body marker lighting
- Commercial vehicle lighting
- Equipment trailer lighting
- Utility-body lighting
Red marker and clearance lights are generally associated with compatible rear and rear-side positions. Actual placement depends on the vehicle type, dimensions, lamp position, and applicable lighting requirements.
Specifications
| Specification |
Details |
| Product Type |
Marker & Clearance Light |
| Lighting Technology |
LED |
| Size |
3.9" |
| LED Count |
12 Diodes |
| Illuminated Color |
Red |
| Primary Function |
Marker / Clearance Lighting |
| Typical Position |
Rear / Rear Side |
| Primary Applications |
Trailer / RV / Truck / Commercial Vehicle |
Features
- 3.9-inch LED marker light
- 12 red LED diodes
- Red illumination
- Compact exterior-lighting design
- Suitable for marker and clearance-light applications
- Instant LED illumination
- Low power consumption
- Long-life LED technology
- Reduced maintenance
- Excellent replacement trailer marker light
- Suitable for compatible RVs and motorhomes
- Great for trucks and commercial vehicles
- Useful for cargo, utility, and equipment trailers
- Search-friendly 3.9-inch / approximately 4-inch size
Applications & Compatibility
The 3.9" Red 12-LED Marker & Clearance Light can be considered for compatible:
- Utility trailers
- Cargo trailers
- Enclosed trailers
- Equipment trailers
- Flatbed trailers
- Horse trailers
- Boat trailers
- Car haulers
- Travel trailers
- Fifth wheels
- RVs
- Motorhomes
- Pickup trucks
- Work trucks
- Service trucks
- Utility trucks
- Heavy-duty trucks
- Commercial vehicles
- Fleet vehicles
- Agricultural equipment
- Specialty vehicles
Replacement Trailer & RV Marker Light
This product has three especially useful characteristics for customers searching for an existing replacement:
3.9" SIZE + 12 LEDs + RED ILLUMINATION
This makes the product particularly relevant for searches such as “3.9 inch red LED trailer marker light” and “12 diode red trailer clearance light.”
Similar approximately 4-inch, 12-LED fixtures are sold specifically for clearance and side-marker applications, reinforcing these as useful search terms for customers shopping this category.
Important Fitment Note
Before ordering, verify:
- 3.9-inch overall size
- Overall width and depth
- Existing mounting footprint
- Required mounting style
- Mounting-hole locations and spacing
- Vehicle operating voltage
- Electrical connector or wiring configuration
- Wire functions and polarity
- Lens color
- Available installation clearance
- Required marker/clearance-light position
The exact lens color, voltage, mounting style, wiring configuration, connector type, wire length, housing material, overall width/depth, IP rating, and regulatory certifications have not been supplied, so these specifications should not be assumed from similar-looking 3.9-inch lights.
Marketing Callout
3.9-INCH PROFILE. 12 RED LEDs. BUILT FOR VISIBILITY.
Compact LED marker and clearance lighting for trailers, RVs, trucks, and commercial vehicles.
