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Discussion Starter #1
Alright guys, I just ran into a serious problem. Well, Serious problem for me. I have a 1993 4.9 Eldo.

I purchase a head unit pioneer Deh-p770mp and the Metra Harness for my car. I install everything in. But there is one problem…. Every time I turn on the unit and turn off the unit the speaker make this quick loud “pop” noise. It’s not just that, it also happens when I change the CD to the TURNER, it also make this pop noise. Matter fact if I even change the channel it does this. It’s driving me nuts!!! So far I spend 7 hours already now I’m stuck on this problem. As of right now my Car is sitting in the garage with every out (Seats, carpet, etc.)

Anybody have a good idea what I should do????
I don’t recall this happen to other fellow board members, has anybody had experience this situation?

Thanks in advance

-frustrated caddie owner.
 

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13 Challenger RT, 11 CTS Coupe Premium, 94 Eldorado (RIP)
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Apollo is on the right track. I had this happen years ago. It was a bad ground. Make your ground wire shorter and at least the same gauge as the ground coming out of the radio.

Always try to make your grounds as short as possible when is comes to car audio.
 

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Discussion Starter #4
Okay... My ground is connecting with the head unit’s ground... that could be the problem. I should make the ground shorter right.... For example, Ground the Car's amp to somewhere in the trunk. And Ground the head unit’s closer to the front..
I just called Metra and they told me to buy a "Ground Loop Isolator for the RCA" Does this make sense to you guys? Thanks for the help again!
 

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getbig said:
For example, Ground the Car's amp to somewhere in the trunk. And Ground the head unit’s closer to the front...
Correct. If you are powering your amp with 8 gauge, make the amp's ground 8 gauge. Somewhere down under that dash there should be a good place to ground the radio.

A ground loop isolator would come in handy if you get a whining sound in your audio. I haven't had to use one myself. I just run my audio wires down one side of the car and the power wires down the other side.
 

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Discussion Starter #6
yea!!!!!! It works. No popping noise!!!! I wire the Metra wires on the driver side. And going to wire the amp wire the passenger side. But where do you drill the firewall? I want to do it somewhere on the passenger side because the amp kit length. Thanks for the HELP!!!!!!!!
 

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Tyr to look for a rubber grommet that is already there. If you can find one, you should go through it.

If you to resort to drilling, be very, very careful where you drill.
 
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