The main wiring harness for the 1966 to 1967 Citroen ID/DS with three relays is a crucial component for the vehicle's electrical connectivity. This harness ensures reliable power transmission from the battery to various car systems, including lighting and ignition. Designed for specific model years, it guarantees a perfect fit and operation. This high-quality cable construction is designed to minimize wear and electrical faults, enhancing vehicle safety and efficiency. Suitable for restoration projects or as a replacement unit for aged or damaged wiring harnesses.