The Honda Goldwing Tour Trunk Sub-Harness 08E86-MKC-A00 is a specific accessory designed for street motorcycles, particularly the Goldwing Tour model from 2018 onwards. This rear placement sub-harness is manufactured by Honda and is compatible with the specified models and years. It is essential for connecting additional lighting or other electrical components to the motorcycle, providing a secure and reliable connection for enhanced visibility and functionality on the road.