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<blockquote data-quote="helotaxi" data-source="post: 1758683" data-attributes="member: 550915"><p>Doesn&#039;t work.&nbsp; That was a little gadget that was described in Car Audio and Electronics in an article back in the mid 90&#039;s for finding emitted/radiated noise.&nbsp; Won&#039;t tell you a darn thing about ground suitability.&nbsp; If you were listening for current to find a good ground spot, you would want the area of highest current for your ground anyway.&nbsp; Electricity takes the path of least resistance which is exactly what you want in a good ground.&nbsp; The spot where the most of the current is flowing is the path of least resistance.&nbsp; Richard Clark tried using a device that created an audible tone to explain why you shouldn&#039;t ground to the battery, but his theory was flawed, because the device was measuring the difference in potential and changing the pitch of the tone in relation to the potential.&nbsp; His explanation was that the tone was highest at the battery and that was because the most noise was there (BS!) when in reality it was indicating that the battery and the chosen ground point had a very high difference in potential and that the ground point chosen was really poor.&nbsp; I don&#039;t have a link to the article describing the whole thing but you could use a like device to find an area with low ground potential.&nbsp; You could also save yourself the rouble and spend a little more on wire and just ground the amps back to the battery.</p></blockquote><p></p>

[QUOTE="helotaxi, post: 1758683, member: 550915"] Doesn't work. That was a little gadget that was described in Car Audio and Electronics in an article back in the mid 90's for finding emitted/radiated noise. Won't tell you a darn thing about ground suitability. If you were listening for current to find a good ground spot, you would want the area of highest current for your ground anyway. Electricity takes the path of least resistance which is exactly what you want in a good ground. The spot where the most of the current is flowing is the path of least resistance. Richard Clark tried using a device that created an audible tone to explain why you shouldn't ground to the battery, but his theory was flawed, because the device was measuring the difference in potential and changing the pitch of the tone in relation to the potential. His explanation was that the tone was highest at the battery and that was because the most noise was there (BS!) when in reality it was indicating that the battery and the chosen ground point had a very high difference in potential and that the ground point chosen was really poor. I don't have a link to the article describing the whole thing but you could use a like device to find an area with low ground potential. You could also save yourself the rouble and spend a little more on wire and just ground the amps back to the battery. [/QUOTE]

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