LED halo rings have become one of the most popular headlight customization options — from WRXs to Jeeps to UTVs. Diode Dynamics HD LED Halos are the brightest on the market, with perfectly uniform output and multifunction PWM drivers. Here's everything you need to know about choosing the right halos for your build.
Table of Contents
- HD LED Halos Overview Video
- What Makes HD LED Halos Different
- Sizing and Fitment
- How to Cut HD LED Halos
- Color Options
- Shop HD LED Halos at Ess K Customs
HD LED Halos Overview Video
What Makes HD LED Halos Different
HD LED Halos are engineered from the ground up — not rebranded imports. Each ring is populated with high-density LEDs and coated with a diffusing gel for perfectly uniform light output with a clean, OEM-like appearance when off. Built-in multifunction PWM drivers provide four-wire control: white low power (50% brightness), white high power (100%), signal mode (double brightness with flash), and ground. This lets a single halo function as a DRL, parking light, and turn signal all in one.
Sizing and Fitment
HD LED Halos are available in universal sizes from 50mm to 185mm (measured by outside diameter; width is 8mm). Vehicle-specific options are available for popular models including Dodge Ram, GMC Sierra, Jeep Grand Cherokee, Jeep JL Wrangler, Subaru Outback, and Subaru WRX/STi — these drop directly into the factory housing. Rounded rectangle halos are also available for 4×6-inch lamp applications.
When measuring for universal halos, measure the outside diameter of the mounting area in millimeters. Inside diameter is 16mm less than the listed outside diameter.
How to Cut HD LED Halos
HD LED Halos can be trimmed up to 20% and remain fully functional — a significant advantage for custom builds that need precise fitment.
Color Options
- Cool White: Clean 6000K white output for headlight DRL applications.
- Red: Perfect for custom tail light builds. Can be wired to increase brightness dramatically when braking.
- Switchback: Bright 6000K white running light that alternates with vivid amber when the turn signal or hazards are activated. The most popular option for headlight customization — combines style with added functionality.
All HD LED Halos are engineered, tested, and manufactured in the USA. Backed by a 3-year warranty.
Shop HD LED Halos at Ess K Customs
Ready to customize your headlights or tail lights with the brightest LED halos available? As an authorized Diode Dynamics dealer, Ess K Customs carries the full HD LED Halo lineup — universal sizes, vehicle-specific kits, rounded rectangle halos, and semi-flex strips — with full manufacturer warranty.