Not really, but at least 8 gauge would be ideal. If you have an old extension cord or vacuum power cord, you can cut it up and use that. It's only to verify that your ground between the amp and battery is good or not. If it cures the noise, than your ground is bad somewhere, if it doesn't, then the problem is elsewhere.

 

RCA's are on the passenger side, power wire is on drivers.

 

Okay so just run that one back, and have someone hold it there, then put it to the amp ground terminal?

 

BTW, my other amp does not work anymore! I was unscrewing the positive terminal of the amp to get my ring terminal off and the screw driver touched the amp casing and it sparked! So now it does not even turn on, no Red light!

 

Did you blow a fuse?

 

Nope, well at least the fuse doesn't look blown.

 

Why would the touching of the amp casing cause that?

 

Cuz it's pretty much the same as shorting your power wire to ground. Do you still have power at the amp with a multimeter?

 

blew a fuse, most likely the fuse(s) on the amp itself

 

Yes I just checked that.

 

I will try another fuse.

 

I'll take some pics.

 

Haha, so I'm sure my ground in the trunk is not good enough. The Amp that I said doesn't work, well it works if I have the RCA's plugged in, but if I use my ground loop isolator then plug to the amp it doesn't work. RCA's are grounding it. My ground in the trunk must suck! where is a great grounding location?!?!?!

 

What model of amp and what model headunit?

When you say it works, do you mean it turns on or it works with no noise?

Ditch the isolator. Did you try the cable to the battery? Try grounding the frame of the amp and see what happens.

 

well my kenwood powers my subwoofer, and since it's lower frequency you can't hear the ground loop noise. So I have just that hooked up, but if you turn it down way low you can hear a "noise" from it, barely.

My amp was not working for some reason, I hooked up the RCA's without ground loop isolator and it does not work, then without ground loop isolator it works. weird!

I don't have my other amp hooked up due to the noise it causes the front and rear speakers to make. The noise is present in anything that is hooked to any amp in my system, it is just not that noticeable in my kenwood sub amp.

How should I ground the frame of the amp?