Elevate your Ford Mustang's performance and style with the Ultimate Conversion Harness! Designed for effortless integration, this plug-and-play solution allows you to upgrade your 2010-2012 Mustang's headlights to Bi-xenon, giving it a modern edge. No need for complex modifications or splicing – our harness maintains your car's factory integrity. Experience seamless mode transitions with the MotoControl 8-Pin Relay. Its innovative capacitors ensure smooth shifts between modes, while the updated weather-pack connector guarantees unrivaled reliability. Installation is a breeze, thanks to labeled components and optimal wire lengths for all vehicle types. Crafted for both technical superiority and visual elegance, our harness features abrasion-resistant Techflex mesh sleeving and an anodized aluminum relay shell with laser engraving. Upgrade your Mustang today and enjoy unmatched style and performance!