Car Electrical Systems Explained - How To Diagnose A Failing Alternator vs. A Failing Battery

► Is your battery warning light illuminated on your dashboard? Are you experiencing a lower than ideal car battery voltage or car battery amps? If that's the case, it may be time to look into servicing your vehicle's charging system—but how do you do that? In this video, Nate Vincent, our Motorsports Director, takes you on a deep dive on how to diagnose a failing alternator vs a failing car battery. From testing the voltage and amperage using a multimeter, to going over the internal components of the alternator itself, everything you need to know to find the source of your problem is covered here. Shop Alternators for Your Car HERE : https://www.fcpeuro.com/Parts/?utm_source=youtube&utm_medium=description&utm_campaign=mps%20bmw%20f15&utm_content=m%20sport%20front%20brakes&keywords=Alternator Read this guide on our blog: https://blog.fcpeuro.com/car-electrical-systems-explained-how-to-diagnose-a-failing-alternator-vs-a-failing-battery 00:00 - Electrical Issues Intro 00:38 - Why Is My Battery Light On? 01:00 - Inspecting Your Drive Belt 02:15 - Using a Multimeter to Test Your Car Battery 05:36- How To Check Your Vehicle's Battery Voltage with a Scan Tool 08:40 - How a Decoupler Pulley Works  09:45 - Inspecting a Decoupler Pulley 10:45 - What is a Voltage Regulator? 12:18 - Testing the Voltage Regulator 12:30 - Is my Alternator Bearing bad? 12:52 - What is inside the Alternator? - Stator and Rotor and Rectifier Explained SUBSCRIBE: https://hubs.ly/H0cDnfN0 Get free parts from FCP Euro: https://www.fcpeuro.com/page/lifetime-guarantee Follow FCP Euro on: https://www.facebook.com/fcpeuro https://www.instagram.com/fcpeuro/ https://twitter.com/fcpeuro https://www.fcpeuro.com/