HD⚡SWITCH: Engineered Performance SUPERIOR QUALITY: Built to the Highest Quality Standards HEAVY DUTY: Corrugate Protects Wires From Start to Finish - NO EXPOSED WIRES! Made In The USA This Wire Harnesses is Made In The USA by HD Switch, and built to the Highest Quality Standards. Premium Heavy Duty Corrugate Protects the wires From Start to Finish, NO Wires are left Exposed. And, our Connection terminals are treated for Anti-Corrosion. Per OEM specification, this harness comes with the built in diode.