The Bucher 7012539 is an original equipment manufacturer (OEM) wiring harness specifically designed for LED blinker systems in Bucher municipal vehicles. This genuine Bucher part includes an integrated resistor to prevent hyper-flashing or error messages often associated with upgrading to LED indicators. It ensures correct 12V signal operation and compatibility with models such as the CityCat 2020, CityCat 5006, and CityFant 6000.