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Message: <blockquote data-quote="MegaHurtz" data-source="post: 1755935" data-attributes="member: 557385">Good grounds do not mean you will not get ground loop noise. The two are completely different balls of wax. No matter how much you sand the surface, no how good your connectors are, no matter how tight it is bolted down, you are still going to have ground loops. Having a ground loop does not necessarily imply having ground loop noise in your system. A ground loop is created by grounding two or more circuits to the same common ground. Ideally, both grounds should be at the same potential, but due to resistances created in wiring and the physical connection to the ground, this can result in different potentials being created, which can cause an unwanted current to flow through your system, which is literally what you hear when you hear ground noise. The best solution to this is to ground everything at your battery, where the chances of equal potential will be at their highest. There is still a chance that you will get ground noise there, but it is the most ideal spot for a number of reasons, equal potential being one, and the least resistive point being another.There is a way to "hear" the potential in different parts of your vehicle. I was told this in a conversation recently, and while I don't remember it exactly, I get the gist of it. I will ask this person again about this method and post about it. What he told me about checking for ground noise was to take an old cassette walkman, remove the magnetic pickup that reads the tape, put it on the end of an approx. 36" long stick, run the two wires to a pair of headphones, and then turn your car on and touch the magnetic pickup to different metal areas of your vehicle. What should happen is that you will hear the stronger electromagnetic field at certain points, which would be your ground noise. You simply could have picked a noisy spot in your vehicle to ground to. You would take your high falutin magnetic stick and test different areas of the vehicle for noise until you found the quietest place, and that's where you ground your equipment.Of course, you could do all of this testing, and it would make no difference if you were using faulty equipment to begin with, so try and eliminate that possibility first, and then work on finding the best spot for your ground //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</blockquote>

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