Complete diode wiring kits for the two most popular towing combinations. They have everything in the Economy wiring kit, plus a Flexo-Coil™ power cord.These kits use a system of diodes to connect your towed vehicle's turn signals, running lights and brake signals to your motorhome's. Diodes prevent electrical feedback and protect both vehicles' electrical systems. Includes: • Four Hy-Power™ diodes, • A 27-foot length of 4-wire electrical cord with 4-wire flat connectors, • Three feet of split wire loom, • A ring terminal, • Wire connectors • Cable ties, • Step-by-step instructions.