How to test relays is a video about just what it says. Every once in a while you need to test a relay and when you do it's important to check it thoroughly, if not you may think it's good and it's not, just because it 'clicks' doesn't mean it's good because that's only part of the equation. Yes you can swap it out with a known good relay and that will save you time but if you don't have a known good then this test should do the trick for you. This video is also a good way to get to know what's inside a relay and how it works so if you're curious about that this would be a good video to watch. If you want to see a video on basic electrical diagnosis click here. https://www.youtube.com/watch?v=wLVu2HYtOhA Visit me at: http://www.ericthecarguy.com/ Stay dirty ETCG Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy 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 EricTheCarGuy, 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 EricTheCarGuy.