Problem with new Kicker ZXM700.5 amp

[deafgoose]

Deaf, since you only have one battery, connect your amp ground directly to the neg post on your battery using at least 4 awg cable.

That is how I currently have it connected and I have a ground loop. I need to find an alternative ground for my amp.

[deafgoose]

Update: grounding the amp to the tower bolts did not work. The stereo won't even play now, even with just the radio playing.

[cab13367]

That is how I currently have it connected and I have a ground loop. I need to find an alternative ground for my amp.

Did you try grounding your HU to your amp's neg lug?

[deafgoose]

That may work but would require me to gut my entire wirin harness to simply "try".

I know for a fact I would solve my problem if only I could find a decent ground point for my amp.

[cab13367]

That may work but would require me to gut my entire wirin harness to simply "try".

I know for a fact I would solve my problem if only I could find a decent ground point for my amp.

Not sure what your logic is here. There can be no better ground point than the battery's neg post. Or am I mission something?

You don't have to gut your harness. I just cut my HU ground wire after the harness, butt spliced in an 18 awg cable, and ran it straight to the batt neg.

I think that in your case, it might not be a ground issue.

[jmvotto]

is the whine there with the amp gains turned all the down? is it a new amp or a refurbed amp?

[deafgoose]

is the whine there with the amp gains turned all the down? is it a new amp or a refurbed amp?

The amp is brand new. There was no high pitched sound unless the engine was running.

When I turn the key to "run" position, I get the high pitched sound for 10sec and it stops. When I turn the engine on the there is a whine that is added to that high pitched sound. ANNOYING!

I ended up grounding the head unit to the amp and its gone.

I really appreciate your help guys. Forums really help for times like these.

[cab13367]

Glad you got it figured out. Sounds like it was picking up noise from the fuel pump. Mine is doing that same thing but I haven't had time to troubleshoot it. ALL my stereo gear is grounded to the stereo battery neg post so I'm not sure where I'm picking up the hiss. I can't hear it once the stereo is turned up so not too concerned about it.