one piece Ballast, simplified wiring which eliminates any unnecessary confusion during installation. As high as 55W power supply, greatly reducing vehicle power system load, the power loss saves up to 50% This ballast will give out more consistant output, meaning color will be more even and accurate. Ballast with aluminum case: waterproof, anti-shock and low-voltage protection. Plug & play: easy to install and no modification required. Car Model: for A4, for A6, for Accent, for Accord, for Astra, for Asx, for Camry, for Civic, for Corolla, for Cruze etc Output Power: 55W Input voltage: 9-16V Input current: 10A max. Working voltage: 13.5V Working current: 4.2A Operating temperature: -40~105 Centigrade Package includes: 2 * Ballast Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is /- 1-3 cm.