Custom Wiring Harness Design & Manufacture | Tatham Engineering

Tatham Engineering specialises in the design and manufacture of bespoke wiring harnesses for motorsport and high-performance vehicles. From standalone engine management installations to complete vehicle rewires, every harness is designed and built in-house to meet the exact requirements of the project.

Drawing on over 20 years of engineering experience, we create custom wiring solutions for track, drift, drag and performance road vehicles, with a focus on reliability, serviceability and long-term durability. Every harness is manufactured using high-quality motorsport-grade materials, professional construction techniques and careful attention to detail, ensuring dependable performance in demanding environments.

Our wiring harnesses are designed for seamless integration with modern engine management systems including Syvecs and ECUmaster, as well as sensors, CAN bus networks, data logging equipment, power distribution modules, motorsport electronics and auxiliary vehicle systems. Careful consideration is given to circuit design, routing, protection, connector selection and future serviceability, resulting in electrical systems that are both robust and easy to maintain.

Whether you require a custom engine loom, a complete vehicle wiring solution, motorsport electronics integration or a full race car electrical system, every harness is tailored to the specific requirements of the vehicle and its intended use. We regularly support projects ranging from Nissan Skylines, Silvias and 350Zs to Cosworth-powered vehicles, BMWs, Mitsubishi Evos, Hondas, Toyotas and Mustangs.

Our wiring solutions are trusted by customers competing in disciplines including Time Attack, endurance racing, 750 Motor Club championships, British Drift Championship events, the TT Championship and drag racing series including Street Eliminator, where reliability and consistency are essential.

The result is a professionally engineered electrical system that delivers clean installation, reduced weight, improved reliability and the confidence required for both road and competition use.

Harness Applications

  • Engine Management Systems
  • Race & Competition Vehicles
  • Drift Cars
  • Track Cars
  • Drag Racing Vehicles
  • Data Logging Systems
  • CAN Bus Integration
  • Power Distribution Modules (PDM/PMU)
  • Fuel System Control
  • Auxiliary Vehicle Electronics

Gallery