MADCATZ MC-50-3LEDF-R 50-Pack Red 3-LED Marker Lights

MADCATZ MC-50-3LEDF-R is a 50-pack of compact red LED marker lights for 12V DC vehicle installations. The listing describes steady and flashing wiring options, so it may suit bulk trailer or fleet rewiring when the light size and wiring match the installation.

At a glance

A bulk set of 50 red lights is aimed at multi-light replacements or larger rewiring projects.
Listing describes three LEDs per light and two wiring modes: steady illumination or flashing.
A red, black and yellow lead arrangement is specified, with black for ground and red or yellow for the selected mode.
The listing claims a sealed PC lens and rubber grommet, and describes use on trucks, trailers, RVs and boats.

Price

$20.99Save 30%

Reference price: ~~$29.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

The 50-light quantity can cover a larger installation without needing multiple packs.
The stated 12V DC operation and separate steady and flash wiring options suit installations where either mode is needed.
The compact marker-light format is intended for clearance and side-marker positions.

Cons

The product is a red marker-light set, not a complete replacement for a multi-function tail-light assembly.

Technical specifications

16 specifications

Identity
Brand	MADCATZ
Model	MC-50-3LEDF-R
Light source	LED
Color	Red (50 Pcs)

Lighting and electrical
LED count and modes	3 LEDs per light with steady and flashing modes
Voltage	Works with 12V DC systems
LED type	2835 SMD LEDs

Dimensions and installation
Listed light size	3/4 Inch
Alternate size in specifications	0.8” diameter with 9” cable length
Wire functions	Black = Ground, Red = Steady Light, Yellow = Flash Mode.
Fit type	Universal Fit
Weight listed	1.2 pounds

Construction and use
Lens and grommet	Sealed PC lens and heavy-duty rubber grommet
Water resistance claim	Waterproof

Package and support
Listed contents	50 x 3/4 Inch Red Side Marker Lights
Warranty description	2 year warranty

What to know before buying

Listing details to confirm

Listing details are inconsistent on size: the title and package details say 3/4 inch, while the specifications give 0.8-inch diameter and a 9-inch cable. The headline and listing details also do not consistently establish the grommet quantity, and package descriptions differ on whether grommets are included. Confirm the mounting-hole fit and selected pack contents before purchase. The 12V DC, waterproof and two-mode descriptions are listing claims, not independent verification.

What’s in the box

50 x 3/4-inch red side marker lightsIncluded
50 grommetsCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Trailer, truck, RV or boat owners replacing multiple red side-marker or clearance lights.
Fleet or repair work where a 50-piece quantity is useful and the wiring can accommodate the listed steady or flashing mode.

Less suited to

Buyers who need amber or another color, an integrated tail/brake/turn lamp, or a confirmed mounting size without checking the installation first.

MADCATZ MC-50-3LEDF-R 50-Pack Red 3-LED Marker Lights · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 26 ratings

5 stars80%80%
4 stars20%20%
3 stars0%0%
2 stars0%0%
1 star0%0%

Aggregate ratings are largely in the higher star categories, but provide no explanation of customer experiences. They offer only a limited signal and do not establish how the lights fit, wire or perform in a particular installation. Check the size and package details against your vehicle before relying on them.

Frequently asked questions

How many lights are included?

The included-components listing specifies 50 red side marker lights. The feature text separately mentions 50 grommets, but the package list does not confirm their quantity, so check the selected listing if you need grommets.

What voltage and wiring modes are described?

The listing specifies 12V DC operation and describes steady mode using black and red wires, or flashing mode using black and yellow wires. Follow the product wiring information for the intended connection.

Will these fit a 3/4-inch mounting hole?

The title and package details call them 3/4-inch lights, while another specification states a 0.8-inch diameter and 9-inch cable. Check the actual opening and listing details before ordering.

Are these suitable for use outdoors?

They are marketed for exterior vehicle marker use and described as waterproof, with a sealed PC lens and rubber grommet. Those are listing claims, not independent water-resistance verification.