Hid Relay Harnesses Are Used To Protect Your Hid Ballasts And Hid Bulbs. They Solve Most Of The Flickering Issues That Some Vehicles Experience When An Aftermarket Hid Kit Is Installed. Relay Harnesses Also Fix Issues That Result From Low Electrical Current From Cars, And The Single Light Turning On During Startup. We Highly Recommend The Installation Of A Relay Harness With Every Aftermarket Hid Kit Installation. Specifications: Hid Digital Bi-Xenon Relay Harness Designed To Work With Aftermarket Hid Kits/Ballasts Fitment: H4 / 9003 Bi-Xenon Conversion Kit Operating Voltage: 12V Dc 35W 30 Amp 100 Percent Plug And Play Setup Content - One Bi-Xenon Controller Relay Harness Covers Both Driver And Passenger Side Headlights Draws A Stable Current From The Battery To Your Hid Lights Wires Are Protected By A Heat Shield As Well As Heat Shrink Should Outlast The Life Of Host Hid Kits Direct Plug And Play This Harness Fixes: Dim Headlights Back Feeding Power Flickering Headlights Malfunctioning Headlights When Using Hi/Low Beams Overloading The Headlight Switch This Is A H4/9003 12V Headlight Conversion Wiring Harness For Cars That Have Upgraded Hid Bi-Xenon H4 Bulbs. The Stock Headlight Switch Cannot Handle The Necessary Power Needed To Light The Hid Bulbs So Headlights Overload The Headlight Switch And End Up Making The Lights Dim, Flicker, Or Turn Off. This Harness Bypasses The Power Draw From The Headlight Switch And Pulls The Power Directly From The Cars Battery, But Still Uses The Stock Headlight Switch To Activate The Relays To Turn The Headlights On And Off. This Is Harness Is A Direct Plug And Play Harness For Hid Bulbs And Ballasts, For Cars That Have H4/9003 Headlight Plugs. Additional Details ------------------------------ Package quantity: 1