Voltage Coding in the Automotive Industry

Hello
Welcome to another video.
Today I would like to show you how Voltage Coding works in cars. Based on this example you might understand how other systems work in the automotive industry.
Let me know in the comments if you wish more of this type of video.
Thanks for watching.

[@meszarosr]

How big is the pull down resistance? is it working without pull down resistence?

[@the-senior-tech]

When is connected to the car you do not need a pull-down resistor. I only used to avoid direct short to ground and reduce current going through a switch. Around 1k Ohm.