Question about Car Speakers & Subwoofers

1 Answer

Popping noise in new stereo install

I just installed a new stereo and speakers in a 1966 mustang. when I turn on the stereo I hear a popping noise through the speakers any Ideas? How important is the + and - connections on the speakers and could this cause the problem?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 20 answers of more than 400 characters.


    An expert who has answered 20 questions.

  • Expert
  • 46 Answers
Re: popping noise in new stereo install

Does this only happen when you turn the stereo on? If so, it's perfectly normal. It happens when the amplifier in your stereo powers up. It's an older car with "unshielded" wiring that isn't going to be grounded properly. Oh, and to answer your question, yes, the plus (+) and minus (-) are for positive (+) and negative (-) terminals. Make sure that red is on positive and black is on negative. Reversing the polarity (installing the wires backwards) normally won't make the system stop working but it can damage your new speakers.

You also should make sure that you've connected the stereo ground. It will probably be screwed onto the back of the stereo and if there isn't a provided green wire in the bundle coming from the car than you'll just need to find a place to attach it to the car's metal chassis.

Posted on Nov 10, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

I am trying to replace the stereo in my Hyundai Santa Fe, 2003. I have the fadio and bought the wiring harness and install kit. The young man that put the radio in thought he had it in and when he turned...

with the right pin connector tere is no need to splice any wires. find the right pin connector, bestbuys are really good installing , and to fix a bad install is like 58 bucks for most problems

Mar 31, 2011 | Car Speakers & Subwoofers

6 Answers

When i turn the volume up to(17-20) my sound cuts out and my speakers make a cracklin noise.i have bought new speakers and rechecked all speakers are rated at 50 watts rms and my stereo pumps out...

It seems you needs more power to maintain the level of good sound.Maybe the maximum volume is 30 - then the mininum is 15 and you can't hear any cracking sound. If you exceed 15 the minimum, as you said starting 17 - 20 you hear crackling sound .Then you reach ,what they called the "cliping level"so much distortion and crackling sound,your stereo too small to accomodate .You must add a power amplifier so crackling will gone and to fit your listening pressure...

Hope it may help you;


Sep 21, 2008 | Car Speakers & Subwoofers

1 Answer

I am installing a kenwood cd receiver kdc-mp205 every thing is hooked up but the screen says protect wat is the problem?

Hello.. sorry to hear you are having problems. With the Kenwood car stereos, when they detect a bad speaker in the car, they go into protect mode to keep from burning up the outputs of the stereo. Either you have a bad speaker in the car or a speaker wire that is touching metal (grounded out). You can cut all of the speaker wires loose at the radio and reset the radio. Then turn the radio on and hook each speaker up one at a time until it goes into protect and that will let you know where your problem is located. Hope this helps and good luck with your venture!

20 year car audio/video installer
Bay manager

Mar 14, 2011 | Car Speakers & Subwoofers

1 Answer

How do yo hook up a boss stereo to a 1994 nissan pickup 4x4 2.4L? need to know what wires from the stereo go to what wires on the truck!

If there's a harness in the dash still, do not cut it off! The easiest thing to do is get a wiring harness that will connect to your Boss radio and then plug right in. You can get them from Amazon or your local electronics store like Best Buy. You can sometimes find them at WalMart as well. The benefit of going to a place like Best Buy is that they have an installation bay with trained techs so they can ensure that you have the right harness. The colors on this harness should match that of the Boss stereo and it's just a matter of soldering/crimping them together.

If the harness has already been cut, its a little more difficult cause the factory wiring doesn't match what's on the Boss. I found the wiring colors for a 94 Pathfinder here but couldn't find any for a 94 Nissan Truck. They should be the same/similar but either way your should still check the ignition/switched and constant power wires with a multimeter before connecting them to the new radio.

For the constant, you can get ground from any piece of metal inside the dash, touch it to the wire the suggested in the diagram. The meter should show 12v or just under. Do the same for the ignition/switched, you shouldn't get any reading. Turn on the ignition and it should go to 12v or just under.

For the speakers you can check the pair with a 9v battery. Take the two wires for lets say the left speaker, blue/white and blue yellow, and touch them to the positive and negative terminals of the battery. You should hear a pop from the speaker. If you don't most likely the wiring is different from what I have listed below which is fine.

After figuring out the which wires are the powers and ground you can basically take one wire and put it on the positive terminal of your 9v battery. Now go through the rest of the wires and tap them one at a time to the negative terminal. Do this until you hear a pop not the wire colors and which speaker made the noise. Now move on to another wire and repeat.

The downfall of doing this is that it doesn't tell you polarity. After you finishing connecting the radio to the in-dash wiring turn it on. Listen to the sound carefully. If it sounds tinny one or more of the speakers polarity are incorrect. Try to determine which speaker/s sound tinny and reverse there wiring. Check again and hopefully everything's sounding good.

1994 Nissan Pathfinder Car Stereo Radio Wiring Diagram
Car Radio Constant 12V+ Wire: Red/Black
Car Radio Switched 12V+ Wire: Blue
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: Red/Yellow
Car Radio Dimmer Wire: N/A
Car Radio Antenna Trigger: N/A
Car Radio Amp Trigger Wire: N/A
Front Speakers Size: 5? x 7? Speakersir?t=modilife-20&l=as2&o=1&a=b00009uhre
Front Speakers Location: Doors
Left Front Speaker Wire (+): Blue/White
Left Front Speaker Wire (-): Blue/Yellow
Right Front Speaker Wire (+): Brown
Right Front Speaker Wire (-): Brown/White
Rear Speakers Size: 5? x 7? Speakersir?t=modilife-20&l=as2&o=1&a=b00009uhre
Rear Speakers Location: Roof Mount
Left Rear Speaker Wire (+): Red
Left Rear Speaker Wire (-): Green
Right Rear Speaker Wire (+): Blue
Right Rear Speaker Wire (-): Pink

I hope this was helpful


Mar 03, 2011 | Car Speakers & Subwoofers

1 Answer

I just bought some infinty door speakers and installed them and now when i turn my stereo up loud the speakers pop and crack

you should check the connections for loose fitting and proper sizing. as well check to see the eq settings on the head unit as improper settings will cause distortion. also the head unit power rating should match that of the speaker, too much power to the speakers can cause damage. hope this will help. good luck

Feb 28, 2010 | Car Speakers & Subwoofers

1 Answer

I get a pop from the sub when the power comes on.

This is caused because the stereo you have put in, is a high power output, or higher than the factory and puts that extra power into the factory amp systems causing the amp to surge the power to the speaker resulting in the pop sound,most newer cars use a stereo system without an internal amp so as to reduce heat and a external amp in usually under a seat or dash and a high power stereo boost the output of the amp.

Sep 27, 2009 | Car Speakers & Subwoofers

1 Answer

Need factory stereo color codes

best way is to get in the with a multireader and find a constant power and a ignition, for the speakers, i use a AA battery with a wire on each end, to test the spekers, you will hear a pop from speaker, so you can find which wires go to what speaker.

May 05, 2009 | Car Speakers & Subwoofers

1 Answer

Popping noise

Its a wiring issue. Check the wiring harness (if used) and make sure all wires are intact. Same with the wires at the speakers. Make sure all speakers and head unit are properly grounded. Hope this helps!

Aug 14, 2008 | Pioneer TS-A1057 Coaxial Car Speaker

1 Answer

Installed Pioneer 2900 car stereo

This really depends on the way that the system has been setup/wired up.
I guess the first thing to check would be the fader on the stereo, has this been set to the centre? If it's been set all the way to the front, then you are NOT going to hear anything from the back speakers at all.
If this is setup correctly then you will have to delve into the wiring to see how it's been wired up. For this I would suggest that you dig out the stereos installation guide. Pull out the stereo from the dashboard & see if there are any cables connected to the rear outputs from the stereo. Are there?

Dec 28, 2007 | Car Speakers & Subwoofers

Not finding what you are looking for?
Car Speakers & Subwoofers Logo

Related Topics:

609 people viewed this question

Ask a Question

Usually answered in minutes!

Top Car Speakers & Subwoofers Experts

xxxxxx xxx

Level 3 Expert

4679 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21840 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you a Car Speaker and Subwoofer Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides