does a bad ground = less power output from head unit

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pearce
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Hi all.

I've recently went searching for the ground in my car and I believe I may have found it.

When I bought my vehicle 2 years ago, I had no clue where any of the wires were/lead to, and to this day I still dont really know. When I bought a head unit and 4 speakers 1 month ago, all I did was -

Cut the existing harness out from under the dash, leaving exposed chords. Stripped the chords, and soldered/heat shrink them to the head units harness.

I then wired all the speakers direct to the head unit, with their own seperate speaker wire.

So I am using all the old grounds, as i made no new ones.

Their are about 5 different grounds I can see under the bonet, all look very similar, different sized chords though, and in different locations

They all look like this.

SDC14321Small.jpg


I'm just wondering if the grounds are like that, would it cause the output from the head unit to be less than satisfactory? If I get all new grounds, would the stereo be louder?

I dont know which ground is for the stereo. But the ground wire is black from the harness, so Couldnt I attach the black harness wire to the chasis (ground) and that would be it? Would it need to attach to the battery aswell?

What wire would I use? The harness wire is no where near long enough.

If its good enough the way it is and isnt causing audio issues then I will not try fix it, because I am not good at this sort of thing.

thanks

 
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pearce

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