Yes, it is important to connect the ground wire on your 1985 Kawasaki Vulcan VN 750. The ground wire, also known as the earth wire, serves as a safety feature in electrical systems. It provides a path for electrical current to flow back to the ground in case of a fault or short circuit, preventing potential hazards such as electric shock or damage to the electrical components.
Ensuring that the ground wire is properly connected helps maintain the integrity and safety of the electrical system in your motorcycle. It is advisable to consult the motorcycle's manual or seek assistance from a qualified mechanic if you are unsure about the specific location or connection of the ground wire in your Kawasaki Vulcan VN 750.