Are these sidemarkers DOT/SAE compliant?

The amber lens version is DOT/SAE compliant, making them legal for street use in most areas. Check your local laws to confirm.

Do I need any special tools to install these?

No special tools are required for installation. These sidemarkers are designed for plug-and-play installation, meaning they connect directly to the factory wiring harness.

How do I connect the sequential turn signal function?

The sequential turn signal function requires the included plug-and-play harness. This harness connects to the headlight connector to power the sequential function.

Diode Dynamics

Diode Dynamics 20-21 Sierra 2500/3500 HD LED Sequential Sidemarkers - Amber Set

Name: Diode Dynamics 20-21 Sierra 2500/3500 HD LED Sequential Sidemarkers - Amber Set
Brand: Diode Dynamics
Price: 409.55 USD
Availability: InStock

$409.55

Brighter LED sidemarkers with startup animation. Optional sequential turn signals.

Key Features

Plug-and-play — simple installation
Dynamic startup sequence — animated lighting effect when powered on
Fully-illuminated housing — even glow across the entire lens
Optional sequential turn signal — adds animated turn signal functionality
Well-made — OEM-grade construction

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more