In hybrid electric vehicles, what does an orange wire indicate?

In hybrid electric vehicles, the orange wire is specifically designated to indicate high voltage. This standardization is crucial for safety as it helps emergency responders quickly identify components of the electrical system that could pose a risk during vehicle extrication or rescue operations. Understanding that the orange wire carries high voltage allows responders to take appropriate precautions to avoid electrical shock or accidental short circuits while handling the vehicle.

The other options pertain to different wiring color codes or designations that do not apply to the identification of high voltage components in hybrid vehicles. For instance, low voltage wires are typically marked with different colors, and a ground wire would not be denoted by orange. Knowing these distinctions is important for the safety of first responders working with hybrid and electric vehicles.