The basics of using a multimeter to check a vehicle's battery and alternator for appropriate voltage.
Often, when a car starts "acting weird" it can be as simple as a battery starting to die or the alternator not keeping it topped up. Testing your car or truck's battery (and alternator) voltage is super simple.
Of course, you can use this knowledge to test voltage at your car's electronics, as well (to verify if it's receiving voltage as expected - for example, is it the brake light bulb or the brake light switch? Checking the voltage at the bulb with the pedal depressed will tell you!).
Previous videos on multimeters:
Multimeter Basics Part 1 (functions and household applications): • Multimeter basics and ...
Multimeter Basics Part 2 (probes and accessories): • Multimeter part 2 - pr...
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Affiliate product link:
Innova 3340 Profesional Automotive Digital Multimeter (shown) -- amzn.to/3o9dbSa
Chapters:
00:00 Intro
02:07 Checking voltage on a (more or less) modern car
02:37 Using a chip clip to attach probes
03:00 Battery voltage - 12-and-change volts
03:12 Starting the car
03:23 Alternator voltage - 14-and-change volts
04:04 Checking voltage on an old car (well...truck)
04:16 Battery voltage - 12-and-change volts
04:37 Starting the truck / alternator voltage - 14-and-change volts
05:56 Outro