Audio, Video and Security Discussion

Where to ground?

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Old Jun 24, 2003 | 09:22 PM
  #1  
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Default Where to ground?

Finally upgraded my stock stereo. Now, a minor problem has occurred. Engine noise! Whinning, whinning, whinning...Well, I suspect it's my ground. Where is a good location for a SOLID Grounding point? Is the seatbelt bolt a good place for ground? Please provide with pics. Preferably pics on an A4 Sedan (B5 Platform). Thanks
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Old Jun 25, 2003 | 07:11 AM
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Default Re: Where to ground?

I hear a lot of people using the seatbelt bolt...I'll be giving it a shot myself this weekend.
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Old Jun 25, 2003 | 10:49 AM
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Default

Seatbelt bolt or cargo tie down bolt in the trunk..
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Old Jun 25, 2003 | 11:18 AM
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Default In my 2002 A4, I actually drilled a new hole (by the seatbelt bolt)...

...used a Dremel to get all the paint off, then tapped it for a bolt and lockwasher that was sized for the 4 gauge terminal ring I had. It just seemed like a better solution. I wasn't crazy about how everything 'sat' when I test fitted at the seatbelt bolt...though people have used that point very successfully so it probably isn't necessary to take the extra step that I took.
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Old Jun 25, 2003 | 09:54 PM
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Default UPDATE:

Originally, I did drill a hole next to the seatbelt bolt. I just relocated the ground to the seatbelt bolt. Secured it and still have engine noise. What else is wrong? Could it be from the headunit ground?

I've got 2 Fosgate amps and a EPX connecting to a Ground Block.
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Old Jun 26, 2003 | 05:37 AM
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Did you strip all the paint away from the hole and remove any coating from the ring terminal ?
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Old Jun 26, 2003 | 11:08 PM
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Default Another update

Yes I did strip the paint and sanded the ring terminal. Still had the noise. So I went to Radio Shack and bought a Ground Loop Isolator ($14.99) and a pair of F/F coupler ($9). After spending less than a minute to hook it up, engine noise is now totally GONE! Hopefully this will hold up....Thanks very much everyone.
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