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NewMalibu

Stereo grounding question

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NewMalibu

This is a dumb question but I could use some help from the experts on the crew  

Im getting ready to install some speakers and an amp in my father in laws Cobalt. I think we are going to run the power from the battery selector switch. If I do this though, do I need to ground the amps at both batteries or just one? I'm assuming I shoild do both batteries and that I should pig tail it prior to connecting to the first battery. 

Any help is appreciated! TIA

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Stevo

just 1 battery is sufficient

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NewMalibu

Thanks. So even if I have battery 2 only selected it is fine to just be grounded to battery 1? 

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shawndoggy

as long as there's a jumper between the grounds on battery 1 and battery 2, then yes.  All of the boat's grounds should be tied together.

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NewMalibu

Perfect. Thanks!

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WABOBO

This thread has me wondering if I'm and idiot and installed my system improperly. Just a quick question. For amps, does the ground go directly to the engine block, or to the negative battery terminal where it is then grounded with the factory installed ground? Does the factory ground need to be upgraded at any point in time? 

I ran a heavy G wire from the amp directly to the block (it says ground so I took the meaning literally). I think this is wrong and where I am getting a ground loop from and possibly causing other problems?  

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Steve B.

In theory, yes you should go directly to the stereo's battery. If you have some noise introduced in your current (see how I did that) setup, you could possibly have two ground points, and that will surely give you noise.

Steve B.

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WABOBO

Thanks Steve!

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Afastmotorider

ALWAYS GO STRAIGHT TO BATTERY IF YOU ANY ENGINE NOISE CHECK YOUR RCA JACKS.

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