Marker Lights

Shape, mounting and lighting function

Shop marker lights by shape & position

Choose big rig marker lights by shape, mounting size and lighting function. For a house-brand custom marker or accent project, start with Glass Is Class Gen 2 watermelon lights, then compare the mini, round, oval, rectangular and fender-light options.

Choose your shape, then check mounting size and function.

Before you order

Choosing big rig marker lights

Read more: colour, function and wiring

Lens colour and emitted light colour are separate specifications. Check the exact lamp’s LED colour, voltage, functions and wiring instructions. One function, two brightness levels and a selectable secondary colour are different features.

Read more: mounting size and included parts

A similar shape does not establish the same cutout, mounting depth or connector. Compare the lamp and mounting dimensions, then check whether a grommet, bracket, plug or housing is included or sold separately.

Read more: custom projects and related collections

Start a house-brand project with Glass Is Class Gen 2 watermelon lights. For a replacement lamp, browse mini marker lights, round marker lights, oval marker lights, rectangular marker lights or fender lights by shape and position.

Match the emitted colour, stated lighting function, mounting dimensions and connection before ordering. If you need stop/turn/tail functions, select a lamp that specifically lists those functions rather than choosing by appearance alone.

Find the right match

Marker light FAQs

How do I choose between mini, round, oval and rectangular marker lights?

Choose the shape that matches the installation, then compare the actual mounting dimensions and depth. A small round lamp and a full-size round lamp can require different holes, grommets and brackets. Check the exact product dimensions rather than relying on the category name.

Does a clear lens mean the marker light produces white light?

No. Lens colour and LED output colour are separate specifications. A clear lens can be paired with a coloured LED. Read both the product name and selected options so the lens and emitted colour match the light you intend to install.

What is the difference between dual-function and dual-colour marker lights?

Dual-function describes two stated operating functions, which may include different brightness levels; dual-colour describes two LED colours. The terms do not establish the same wiring or behaviour across products. Follow the exact lamp’s function and wiring description.

Can a marker light replace a stop, turn and tail lamp?

Choose a lamp explicitly listed for the functions you need. A marker lamp, turn-signal lamp and combined stop/turn/tail lamp can look similar while performing different jobs. Shape, lens colour or wire count alone does not establish the required functions.

Will a replacement marker light fit my existing grommet or bracket?

Compare the lamp’s mounting size, cutout, depth and retention method with the existing mount. Check the listed grommet or bracket requirements and connector clearance. Matching the visible face shape alone does not establish that the replacement will fit.

Do all marker lights use the same voltage and wiring?

No. Use the voltage and circuit information supplied for the exact lamp. Match its connector, wire functions and control arrangement to the installation; do not copy the wiring colours or operating mode from a different product.

Is the listing a complete light or a separate component?

Read the package contents and quantity. The range can include lamps, replacement components and mounting parts. Confirm whether the selected listing supplies the bulb, housing, grommet, bracket or plug you need, and whether it is sold individually or as a set.

Can I use Glass Is Class Gen 2 for a custom marker-light project?

Explore Glass Is Class Gen 2 watermelon lights for custom big-rig and pickup marker or accent installations. Choose the correct assembly or component and check the mounting location, clearance, bracket and wiring route for the actual truck.

Need help matching a marker light?

Send the current light’s part number, mounting dimensions and photos of its connector so our team can help narrow down the options.

Ask the BTS team

Choose big rig marker lights by shape, mounting size and lighting function. For a house-brand custom marker or accent project, start with Glass Is Class Gen 2 watermelon lights, then compare the mini, round, oval, rectangular and fender-light options.

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Questions about big rig marker lights

How do I choose between mini, round, oval and rectangular marker lights?

Choose the shape that matches the installation, then compare the actual mounting dimensions and depth. A small round lamp and a full-size round lamp can require different holes, grommets and brackets. Check the exact product dimensions rather than relying on the category name.

Does a clear lens mean the marker light produces white light?

No. Lens colour and LED output colour are separate specifications. A clear lens can be paired with a coloured LED. Read both the product name and selected options so the lens and emitted colour match the light you intend to install.

What is the difference between dual-function and dual-colour marker lights?

Dual-function describes two stated operating functions, which may include different brightness levels; dual-colour describes two LED colours. The terms do not establish the same wiring or behaviour across products. Follow the exact lamp’s function and wiring description.

Can a marker light replace a stop, turn and tail lamp?

Choose a lamp explicitly listed for the functions you need. A marker lamp, turn-signal lamp and combined stop/turn/tail lamp can look similar while performing different jobs. Shape, lens colour or wire count alone does not establish the required functions.

Will a replacement marker light fit my existing grommet or bracket?

Compare the lamp’s mounting size, cutout, depth and retention method with the existing mount. Check the listed grommet or bracket requirements and connector clearance. Matching the visible face shape alone does not establish that the replacement will fit.

Do all marker lights use the same voltage and wiring?

No. Use the voltage and circuit information supplied for the exact lamp. Match its connector, wire functions and control arrangement to the installation; do not copy the wiring colours or operating mode from a different product.

Is the listing a complete light or a separate component?

Read the package contents and quantity. The range can include lamps, replacement components and mounting parts. Confirm whether the selected listing supplies the bulb, housing, grommet, bracket or plug you need, and whether it is sold individually or as a set.

Can I use Glass Is Class Gen 2 for a custom marker-light project?

Explore Glass Is Class Gen 2 watermelon lights for custom big-rig and pickup marker or accent installations. Choose the correct assembly or component and check the mounting location, clearance, bracket and wiring route for the actual truck.