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  #1  
Old 10-19-2010, 03:12 PM
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Default Check your groundings

I noticed some installs with faulty HU grounding, this is extremely bad when you use high power amplifiers, you don't want a 280V burst over your speaker.

The HU ground must be the same as the amplifier's ground, and to check if the HU is ok measure the resistance between RCA GND and the battery GND, there must be something like 3-20 ohms, depending on the brand.
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Old 10-19-2010, 05:40 PM
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So the harness ground is not as good as going directly too the battery?
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Old 10-19-2010, 05:43 PM
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Could you expand a little. Are you saying you run a ground from you HU directly to your battery? Or just to the cars frame?
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Old 10-19-2010, 09:05 PM
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The harness GND is ok, this is directed to custom installs. Just make sure it is ok before you plug the amp.

Another little tip, always connect the (-) cable on the amp BEFORE the (+).
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Old 10-19-2010, 09:06 PM
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thanks for the info buddy
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Old 10-19-2010, 09:11 PM
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Murilo again speaks the truth.
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Old 10-19-2010, 09:15 PM
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what are some signs that its not good.
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Old 10-19-2010, 09:18 PM
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Quote:
Originally Posted by koopa View Post
what are some signs that its not good.
Amp acting weird, HU shutting down, severe cases speakers blowing up easily... I had this problem myself during a show, speaker gone and amp protected, seen the same in many competition cars as well.
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Old 10-19-2010, 09:22 PM
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i wonder if this applies to me...
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Old 10-19-2010, 09:27 PM
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well,if you have any of the problems mentioned above,maybe it does lol!!
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