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This installation reference covers Halo Diffusers +. Match the product, vehicle configuration and controller part number before starting.
Part # B30, B31, B32, B33, B34, B35, B36, B37, B38, B39, B40, B41
Halo Diffusers
What Is a Halo Diffuser?
A Halo Diffuser is a plastic cover that mounts over an LED halo ring. It helps hide the individual LEDs and spreads the light evenly, creating a smoother, more uniform plasma-style glow.
Instead of seeing individual LED points or hot spots, the diffuser helps the halo appear more like one continuous illuminated ring.
Halo Without / With Diffuser
How to Install a Halo Diffuser
Step 1 — Position the Diffuser
Place the diffuser directly over the corresponding halo ring.
Make sure the diffuser is centered and properly seated over the halo before securing it.
Step 2 — Secure the Diffuser
Use thin beading wire, craft wire, or Halo Mounting Wire – RGB Halo Kits to secure the diffuser to the halo.
Carefully tie the diffuser and halo together at several points around the ring.
Do not overtighten the mounting wire. It should be secure enough to hold the diffuser in place without putting excessive pressure on the diffuser or halo.
Step 3 — Optional Hidden-Wire Method
For a cleaner installation, you can carefully drill small mounting holes into the side of the diffuser.
Run the mounting wire through these holes instead of wrapping the wire over the front of the diffuser. This helps keep the mounting wire less visible after installation.
Important: Drill carefully and avoid placing holes too close to the edge of the diffuser, as this may cause the plastic to crack.
Step 4 — Check the Installation
Before installing the halo inside the headlight, verify that:
- The diffuser is centered over the halo.
- The diffuser is securely attached.
- The mounting wire is not overtightened.
- No mounting wire interferes with the LEDs.
- The halo wiring is not pinched or under tension.
Step 5 — Test the Halo
Connect and test the halo before completing the final headlight installation.
Verify that the entire halo illuminates properly and that the diffuser produces an even, consistent glow.
Available Halo Diffuser Sizes
Halo Diffusers are available in multiple sizes.
Current size options may include:
- 55mm
- 60mm
- 70mm
- 80mm
- 86mm
- 90mm
- 100mm
- 110mm
- 120mm
- 140mm
- 160mm
Always confirm your halo size before ordering a diffuser.
View Halo Diffusers & Current Size Options
Important Installation Notes
Do not use excessive force when installing the diffuser.
Do not overtighten the mounting wire, as excessive pressure may crack or damage the diffuser.
We recommend using mounting wire rather than epoxy when securing the diffuser to the halo.
Always test the halo and diffuser combination before permanently mounting the halo inside the headlight.
Need Help?
If you're unsure which diffuser size you need or have questions about installation, contact RGB Halo Kits Support at info@rgbhalokits.com.
Please include your order number, halo size, and photos of your halo/diffuser setup so our support team can assist you faster.
Source and installation help
Checked against Halo Diffuser Info + Install guide in the RGB Halo Kits Help Center on October 22, 2026. Follow the instructions supplied with your exact kit if hardware versions differ.
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