Are these sidemarkers DOT/SAE compliant?

The amber sidemarkers are DOT/SAE compliant, matching your original sidemarkers. The smoked and clear versions retain the retroreflector optics but are not explicitly listed as DOT/SAE compliant.

Do I need any special tools or skills to install these?

No, these sidemarkers are designed for plug-and-play installation, making the process straightforward. The optional sequential turn signal feature includes a plug-and-play wiring harness that connects to the headlight connector, further simplifying the installation.

What is the startup sequence?

Each time the sidemarkers are activated, they illuminate in a bright amber color, starting from the center and expanding outwards. Once fully lit, they transition to the standard running light mode.

Diode Dynamics

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

Name: Diode Dynamics 20-21 Sierra 2500/3500 LED Sidemarkers HD Smoked Set
Brand: Diode Dynamics
Price: 307.15 USD
Availability: InStock

$307.15

LED sidemarkers are a direct replacement for your factory fender lights. Available with an animated startup sequence and optional sequential turn signal.

Key Features

Plug-and-play compatible — easy installation
Dynamic startup sequence — animated lighting effect
Fully-illuminated housing — distinctive look
Dual-lens design — even glow
Optional sequential turn signal — adds signaling function
Smoked lens — looks good on black and gray vehicles

⚠️ 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