Question

What do the ignition switch wiring color code mean?

While the black wire acts as a stable ground, providing a solid foundation, the red wire delivers power. Here's what the rest do.

How does an ignition switch work?

Firstly, the ignition coil takes electricity from the car’s battery and turns it into strong sparks. It is the primary winding of the coil that gathers power from the car’s battery to make a spark. Secondly, the distributor sends these sparks to special spark plugs through wires with the help of a rotor.

So, when the car starts, the spark plugs create a spark in the engine’s cylinder, where fuel vapor awaits. They meet to result in combustion, which starts the car.

What do the ignition switch color codes mean?

The ignition switch wiring color code is like a secret language for the wires that connect the ignition switch to your car’s electrical system. In other words, it gives a better understanding of which wire does what. There can be variations in the colors based on the make of your vehicle. However, there are some common ones, which include black, red, white, and green.

When dealing with ignition switch wiring, using the right colors is similar to following a map to avoid wrong turns. The most common wire colors you’ll come across are black, red, green, and brown. Here’s the color code cheat sheet:

• Black: This one’s for ground wires, like the car’s electrical foundation. 
• Red: The power wires. 
• Green: Green usually handles ignition duties. 
• Brown: For switched connections. 

Common Ignition Switch Wire Colors 

How To Identify Ignition Switch Wires 

The ignition switch harness in your steering wheel column will lead you to the ignition wire. Here are the types of wires that go to the terminal switches.