Rywire Motorsports Electronics is a company specializing in high-performance wiring solutions, particularly Mil-Spec engine harnesses, for a variety of applications, including motorsports and show builds. They are known for their custom engine harnesses, particularly for K-series engine swaps, and offer a range of products including connector plates, bulkheads, and tucked radiators. Rywire also provides ignition upgrades and is involved in the development of electric vehicle conversions.