The Trainer #73: Automotive Electrical Fundamentals - Improve Your Electrical Troubleshooting Skills
#OhmsLaw #KirchoffsLaw #resistance #voltage #amperage #ohms #current #voltagedrop
Electrical troubleshooting is, for many of us, a challenge. I think it’s similar to a pilot who flies in VFR (Visual Flight Rules) conditions versus one who flies in IFR (Instrument Flight Rules) conditions. The VFR pilot relies on outside references to maintain control of his airplane; how the nose of the plane looks compared to the horizon, how the wing tip angles on either side align relative to the horizon, and the G-forces at play on his body. Sure, the instruments play a role just as they do when we drive a car, providing speed and other important information to further that control.
The IFR pilot, though, is dependent on those instruments and must actively ignore what his eyes and senses may be telling him. Often, there is no outside visual reference at all - nothing but sheer white caused by the enveloping clouds gathered around him. Imagine driving your car without outside visual clues!
Maybe it’s the same here. Electrical problems are often hidden from view, if not entirely invisible to our sight. There are no audible clues, either, unless the harness is on fire! We have to rely on our tools and our knowledge, often actively ignoring what our emotions may be telling us.
The tool part is easy. For the majority of problems we need to locate, our trusty DMM (Digital Multimeter) will do the job. The knowledge, on the other hand, may be lacking. We need to know our fundamentals inside and out, and understand the laws that govern electrical circuits. And, just as the VFR pilot ill prepared for IFR conditions will succumb to vertigo and spiral to the ground, techs failing to master these fundamentals will find themselves flying in circles, and wasting valuable time when dealing with electrical faults.
In this edition of The Trainer, we’ll teach you how to fly IFR with your DMM and troubleshoot electrical concerns with confidence!
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Due to factors beyond the control of Motor Age, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Motor Age magazine (UBM Americas - Automotive Group) assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Motor Age recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of Motor Age, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not Motor Age magazine or its corporate parent, UBM Americas.
I’ve been going through hell trying to find the electrical issue with my 2017 mustang and knew NOTHING about electricity so I’ve watched hundreds of KZhead videos and this is the only one I was able to grasp and now I understand how electricity works. Thank you
Glad it helped!
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Sir, this is brilliant. A 63 years old apprentice 👍
This guy is easy to listen to. Thanks for the video.
I’m an automotive technician and this is by far the best voltage drop video I have ever seen!
the best intro for automotive electrical work and troubleshooting.
Thank you for knowledge and time sir. All the way from Australia.
This video alone has taught me more than a year of auto tech when I was in high school.
Glad it helped, and if you really want to show deep appreciation,,,,🤔,,you can transfer some 'funds' into Pete's account,and a few to me for the suggestion 🙂 Lol
19:05
Thank you, you didn't use the water in a hose analogy and for the first time in my life I understand what is being explained, and that's saying something, I'm 59. Always wanted to understand but never could so I avoided it, not anymore. Wow, really man, thanks for explaining in a way that I finally get it.
Glad it helped!
Thank you for sharing! 🙏
Best video / presentation I've seen on this!
Super job. Best on the web, in my opinion. Thank you, Sir.
Thank you!
You are a good teacher. Thanks for the video.
Thank You! Super awesome video. Very well organized and well put together!
From this point,I'm not studying with any other trainer on line but u PETE,ur name deserves all cap letters,ur training exercises incorporated with my critical thinking,is gonna advance my skills to the next level,long before my instructor anticipated,thank u much.
You are a wealth of knowledge
Solid video my man! Damn, that a lot of knowledge! Thanks for sharing. 👍
Thank you very much for the information.
Excellent knowledge and teaching skills
High Quality Teaching
THANK YOU! Excellent explanation 👏
The Electron is fascinating. Travels at almost the speed of light. With pressure behind them you better get out of the way. I love this video. Third time watching. Enjoy Petes presentation of the circuits and his knowledge of Automotive Electricity.
Very useful indeed. Thank you Sir
This was massively useful, thank you!
Glad it helped you.
Thank you for the information
I am so thankful for you and these videos, you’re refreshing my memory on everything I learned in tech school and had forgot. If you don’t use it you lose it. Also you provide better information than most of the courses I’ve taken.
I ENJOY YOUR TRAINING CLASSES. YOUR PERSPECTIVE HELPS ME UNDERSTAND IN A NEW WAY.
Very impressed. Proper fundamental teaching has given me a whole new understanding.
Thank you! I'm glad it was helpful. Be sure to check out our latest offerings on electrical testing techniques!
Thank you! This course one lesson would have cost me a couple hundred dollars from a university. You are a great teacher, and you have improved my life. Thank you, thank you! God bless you.
Thank you! I'm very glad you found it helpful.
Man thank you so much! Seriously helped me get my head wrapped around the actual troubleshooting process so much better than I've ever understood it before! You have a gift for explaining things in comprehensible terms.
Solid! Much appreciated.
Great video.. love this sort of content.
Great video! Thanks Pete!
Very easy to follow and understand. You cleared up a lot of unknowns for me. Thanks.
Well made, very informative and well explained videos! I am hooked on your “the trainer” series! Almost like a technical institute on KZhead! Cant beat years of experience! Thank you and everyone that helps make all these videos!
Thanks Chuck!
Deseeeepiosososoeoooosisosososkiissoeoekekekkejeidie I’ll skisieiodiidissoksksksskskskslskksskisksldwpwlellqlqplkkke kelwlww if you want to just let
Such a well done video! Thanks!
Nice refresher, thanks
This is phenomenal. Thanks.
Excellent video Pete. Very informative thanks.
Super informative, thanks so much!
Absolutely excellent, thank you.
Great instructor !
Thanks for the great info!
Thank you, that’s really informative.
Great video. Thanks for sharing.
Your simply the best out there Pete thanks so so much for the wealth of your experience, in showing others.I was doing a job today and had one of them where the heck am I here on the fix I was looking for and had one of them mental melt downs lol. (smiles) and for the life of me do you think I could get my thoughts back together did not happen as as my grandfather once told me Dave just walk away for a half hour and come back to it. But today I just said iam coming back tomorrow (Is my car) That said your video brought it right back to me in your couple of videos. Thanks Pete once again (always watch your videos I have learned all of my automotive,electrical through your channel ,I have never looked back and we are talking about quite a few years now (coming up dec 25th iLL BE CLIMBING ANOTHER YEAR (SMILES) YEAH HITTING THAT 61 MARK AND STILL PUSHING THROUGH. AWESOME VIDEOS LIKE USUAL PETE.
Solid instruction, Pete!
brilliant video. everything well explained
Fantastic video!!! I for one, would love to see more videos of this nature. I hope you make this into a series.
That was great,ur gonna make me a great technician,Wayne, Stratford automotive tech student, straight from the trenches of Baltimore,but passionate about my studies,love ur video,the way u break things down, please keep them coming.
Glad you find them helpful! I wish you the best in your future career.
Great videos! Thanks a lot !
the best intro for automotive electrical work and troubleshooting. hands down. excellent style. perfect reiteration of important points. i've been working with electrical systems in construction forever....and you nailed it.
Thank you!
thanks Pete great as always
What a great video! Thank you for sharing your knowledge. You seem like a great teacher.
Great video.Thank You.
Brilliant video. Thanks to The Trainer.
Awesome video, many thanks.....
Thanks for sharing this video. It's very useful to have the basic knowledge.
Fantastic video, thank you!
Thank you so much for all the work that went in this video ! And for free ! Amazing
Excellent explanation. Thanks.
Brilliant video and explanation again,thanks Pete for taking the time to share👍👍
thanks PETE watch a lot of these electrical videos as a refresher!
Brilliant! Perfect! I feel inspired to go check my no start now!
Wow! Awesome! Thank you
Thanks i really needed a refresher on electrical circuits and you explained it very well.
Excellent presentation Pete. Very informative.
Phenomenal content!
Another great learning experience
Thanks for your great work, I really appreciate your efforts.
Great video! Very easy to understand. I wanted to know the very basics of this subject and this video really helped. Thank you
Excellent instruction. A great teacher.
That was very helpful.
Great video. Helps me understand a lot better now.
What a explanation, awesome 👌
Hello, Glad you are sharing with us, thanks alot and be blessed. Tigo
Thank you!
Can't thank you enough. This is going to help me diagnose a o2 sensor circuit problem
I Learned more from these Verily.Thank you so much Sir Pete
Excellent teaching,thanks a lot
nice info, helps a lot, thanks.
Thank you kindly teacher 🙏
That was excellent
This is an amazingly awesome lecture I have been listening to this video several times and I have convinced myself that I have the AH Ha moment now.
Great delivery! I'm trying to learn how to troubleshoot.
19:05 .....Taking its Share , Love the gestures
Awesome video!!
Awesome training 👏👏👏
You're a fantastic teacher, Pete! Thank you for this wonderful resource you have given to those of us trying to learn this stuff.
Thank you. I'm glad you found it useful.
Wonderful intro to the testing world...
Thank you for this video and all of the content you put out. The information is price less.
Great video!
Will explain, thanks for sharing
I had 2 yrs. of electronics many years ago, this was a great /practical refresher. And as a private pilot, you pose a valid analogy (only had 15hrs. of instrument trn). Thank you Sir! Great job! Down to earth (pun) humble, knowledgeable presentation. Now back to learning my Pico 4425.
thank you sir, you really have a perfect teaching style. engaging and very informative. appreciate this lesson!!
Great video.
THANK YOU SIR! GOOD VIDEO.
Thank you for all your technical information.
Very professional instructor
Excellent presentation. Very clear and super informative. Even I grasped most of it. I'll watch it again (and again) and start testing a few circuits.
Thank you for this great video. What's true yesterday is still true today.
Very helpful presentation. Visually seeing how and where you placed the DMM leads helped. Thanks