Our high-quality engine, transmission, and standalone drive-by-wire harnesses ensure consistent, dependable power delivery across every system of your build. Designed for clean installs and precise fitment, each TSP harness uses proper gauge wiring, secure terminals, and durable insulation to withstand heat, vibration, and real-world performance demands. Whether you’re wiring a full engine swap, upgrading your transmission controls, or converting to drive-by-wire, our harnesses keep every circuit connected and operating exactly as it should.