When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Color coding is really nothing new--radio component manufacturers started doing it in the 1920s.

OBJECTIVE: The responder shall identify the three possible colors of high-voltage electric cables and connectors within the engine compartment of a gasoline-electric hybrid vehicle. TASK: The rescue ...

Just as an Ethernet port can have differently colored lights, the cables themselves can also come in an array of colors. It's tough to know what the colors mean, especially since it depends on the ...