Bulb only · AlphaFit Duo Gen 2
Select Red or Purple from one replacement bulb
This Red/Purple AlphaFit Duo Gen 2 bulb supplies two selectable LED colors for a compatible Glass Is Class Duo housing. One bulb is included; the glass lens, housing and vehicle mounting bracket are separate.
Red primary color
SKU GICG2-LED-RP. The bulb has one power setting for the selected red color; it does not use the single-color bulb’s 15W dim and 20W high modes.
Purple secondary color
A separate feed selects purple. If both color feeds are powered, the purple secondary color takes priority.
Before you order
Plan separate color feeds and confirm the housing
Complete the system
Use the matching assembly when you also need the housing
Red/Purple Gen 2 complete assembly
This related assembly combines a clear glass housing with this exact Red/Purple Duo bulb. Confirm required and optional choices on that product page.
Mounting and wiring guide
Review housing, bracket, clearance and wiring checks before treating this custom component as suitable for an installation.
Use boundary
Custom show and off-road lighting component
This product is not represented as SAE/DOT-compliant road lighting. Color, brightness, bulb base and a truck photo do not establish suitability for legally required road lighting or finite year/make/model fitment.
Product questions
Frequently asked questions
What does Red/Purple mean on this Gen 2 bulb?
Red/Purple identifies the two LED colors: red primary and purple secondary.
Does this Gen 2 version have dim and high settings?
The AlphaFit Duo has one power setting for each selected color. It does not offer the 15W dim/20W high settings of the single-color Gen 2 bulb. Confirm the circuit load for the installed components before wiring.
What happens if both color feeds receive power?
The three-wire arrangement provides ground and separate red and purple color feeds. If both color feeds are powered, the purple secondary color takes priority. Follow the supplied lead identification; the color names here identify the LEDs, not the insulation colors.
What is included in this listing?
This Red/Purple AlphaFit Duo Gen 2 bulb is a replacement component for a compatible Glass Is Class Duo watermelon light. One LED bulb is supplied; the glass lens, housing and vehicle mounting bracket are separate.
Can I use this H11-style bulb in my vehicle headlights?
No. The H11-style base identifies the connection used by this Glass Is Class component. It does not establish an OEM headlight application, beam suitability or fit in a different manufacturer’s watermelon housing.
Will it fit my pickup or semi-truck?
This is a custom lighting component, not a verified year/make/model kit. Compare the mounting pattern, rear clearance, housing and electrical supply for your installation. Use the watermelon light bracket range to choose a suitable mount; a matching truck name alone does not confirm fit.
Can this Gen 2 component run on 24V?
This Gen 2 listing specifies 12V and 24V compatibility. That rating does not establish the voltage rating of an older Glass Is Class or Duo bulb; identify the exact part before replacing it.
Is this a certified replacement for required road lighting?
The current BTS specification identifies this line for show and off-road use and does not claim SAE/DOT compliance. Do not use lens color or brightness as proof that it meets a required road-lighting function.
What should I check when replacing an older bulb?
Identify the existing bulb and housing generation, then compare the base, clearance and lead identification. The BTS mounting and wiring guide explains what to check. Contact BTS with the part number and photographs if the original component cannot be identified.
Warranty
One-year limited warranty
One-year limited warranty for manufacturing defects. Existing warranty terms apply.
