[HID headlight ballast replacement]Headlight Control Unit, a crucial part of HID lighting system, provides the voltage needed to start the lamp and regulates the electrical current of the light once it is lit. A failed ballast will cause your bulb to burn. Every ballast is designed to connect directly to your vehicle and requires NO programming or coding.[Replace Part Number & Easy installation ]932350-16 93235016 031100-3093 0311003093[Fit The Following Models] Focus 2 2005-2008, SRX 2010-2016, 2010-2013, 2 LR2 2008-2012, Mercury Montego 2005-2007, DB9 and 2006-2010, Vantage 2009-2011, for 2009-2010, Opel C 2004-2009, SAAB 9-4X 2011 and up.[Premium quality ]made of premium aluminum for better heat dissipation and vibration resistance,6 protections against overpressure,low pressure,overheating,no-load,short circuit,reverse connection for more safety and durability[Fast startup & safe stability]built-in high pressure bag can current conduction speed & save power consumption for fast startup,also can protect high pressure bag from any dust & rain in the engine environment to enhance securityBuilt-in high pressure bag for fast startup & safe stabilityAluminum for better heat dissipation and vibration resistance performanceTreated with adhesive glue irrigation for better waterproof & shockproof performanceEasy installation,just plug and play without any program or code6 protections against overpressure,low pressure,overheating,no-load,short circuit,reverse connection for more safety and durabilityPower: 35WBeam angle: 360Waterproof rate: IP 68Operation voltage:DC 12VWorking temp: -40 , +80 Part Number:031100-3093, 031100-3091,03110-03090,YBA04,031100-3093.Fitment:for Focus 2 2005-2008for SRX 2010-2016for 2010-2013for 2 LR2 2008-2012for Mercury Montego 2005-2007for DB9 and 2006-2010for Vantage 2009-2011for 2009-2010for Opel C 2004-2009for SAAB 9-4X 2011 and upcolour:SilverMaterial:metalPackage Contents:1 * Headlight BallastOnly the above package content, other products are not included.Note: Light 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 +\/- 1-3cm.