Product Specifications

I. Overview & Functional Design
The 9005XS is a specialized variant of the standard 9005 halogen bulb, distinguished by its selective yellow glass coating. This design is engineered to enhance performance in specific weather conditions while maintaining full high‑beam intensity. The “XS” designation typically indicates this amber‑tint feature.

II. Key Characteristics & Application

1. Weather‑Optimized Spectrum: The amber (yellow) band coating on the bulb’s glass filters out a portion of the blue‑white wavelengths, producing a beam with a higher concentration of longer (yellow‑orange) wavelengths. This reduces glare and back‑scatter in fog, rain, snow, or dust, improving contrast and foreground visibility.

2. Dual‑Role Capability: While it remains a dedicated high‑beam bulb (65W, P20d base), the selective yellow output makes it suitable for:

   • High‑beam use in inclement weather where standard white light would cause excessive reflection.

   • Auxiliary fog/driving light conversion in aftermarket lamp pods or factory housings that accept a 9005 bulb, where the yellow beam is preferred for penetration.

3. Regulatory Compliance: As a SAE/DOT‑recognized variant, it remains fully legal for on‑road use in high‑beam applications where 9005 bulbs are specified.

III. Identification & Compatibility

• Base & Electrical Spec: Identical to standard 9005 – P20d plastic plug‑in base, 65W, single‑filament. Direct plug‑and‑play replacement in any 9005 high‑beam socket.

• Visual Distinction: The most obvious identifier is the amber‑yellow stripe or band applied to the upper portion of the bulb’s glass envelope. The rest of the bulb may remain clear.

• Compatibility Notes:
  — Fully interchangeable with standard 9005 bulbs in the same socket.
  — Not interchangeable with 9006 (low‑beam), H11, or any other base type.
  — Ideal for drivers in regions with frequent fog, heavy rain, or winter conditions who wish to retain high‑beam function while gaining weather‑specific performance.

IV. Important Installation & Usage Notes

• Orientation Matters: Some 9005XS bulbs have a directional yellow band. For optimal effect, install according to any “TOP” marking so the coated portion aligns with the upper area of the reflector.

• No‑Touch Handling: As with all halogen bulbs, avoid skin contact with the glass. Oils can create hot spots, especially on the coated surface.

• System Pairing: This bulb is designed for the high‑beam position in a 9005/9006 system. It does not alter the vehicle’s low‑beam function.

• Performance Expectation: In clear conditions, the beam may appear slightly warmer (less white) than a standard 9005, but intensity and range are preserved. In poor weather, the reduction in reflected glare can subjectively improve visual comfort.