Dondero14
01-03-2026, 05:16 PM
I know a lot of people on here have worked on cars previously and/or have a very great knowledge on them to begin with. I, for one, am as green as the grass in Ireland when it comes to car wiring. I've never done it and I'm sure there are probably many out there that may be in the same situation. Having started my wiring harness on my car, I've started taking some time to learn at a basic level how the electrical system works in a car. The biggest thing I didn't fully understand was why there were so many grounds throughout the whole wiring harness. What I didn't know is that the chassis is being used as a conductor back to the negative battery terminal. That was the lightbulb that I needed to fully understand the bulk of this topic. I know how electrical components function and work but I just didn't fully understand all the ground. After I learned that, everything else made complete sense. I found two incredibly good watches on youtube that dumbs the process down significantly and I figured its worth sharing. If one person reads this post and gets something out of the videos below, I'm happy to know I was able to help them better understand this portion of the build because they simplified a lot for me.
This video explains very well how all the electrical grounds work within a car
https://www.youtube.com/watch?v=gC69-BDzvps
This video shows how a basic simple electrical circuit works for a car. Ironically he is driving a F5 Cobra.
https://www.youtube.com/watch?v=CzVraj_aL54&t=1s
This video explains very well how all the electrical grounds work within a car
https://www.youtube.com/watch?v=gC69-BDzvps
This video shows how a basic simple electrical circuit works for a car. Ironically he is driving a F5 Cobra.
https://www.youtube.com/watch?v=CzVraj_aL54&t=1s