1999 Honda Accord Car Audio Installation Guide

Whether your an expert Honda Accord mobile electronics installer, Honda Accord fanatic, or a novice Honda Accord enthusiast with a 1999 Honda Accord, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 1999 Honda Accord vehicles are becoming increasing more difficult to identify due to the installation of more advanced factory oem electronics.

One of the most time consuming tasks with installing an after market car stereo, car radio, satellite radio, xm radio, car speakers, tweeters, car subwoofer, crossovers, audio equalizer, car amplifier, mobile amp, car amplifier, mp3 player, ipod or any car audio electronics is identifying the correct color car audio wires for your 1999 Honda Accord.

The Modified Life staff has taken all its Honda Accord car radio wiring diagrams, Honda Accord car audio wiring diagrams, Honda Accord car stereo wiring diagrams, Honda Accord car radio wiring schematics, Honda Accord car wiring diagrams and cataloged them online for use by our visitors for free. Our automotive wiring diagrams allow you to enjoy your new mobile electronics rather than spend countless hours trying to figure out which wires goes to which 1999 Honda Accord part or component.

Feel free to use any Honda Accord car stereo wiring diagram that is listed on Modified Life but keep in mind that all information here is provided “as is” without any warranty of any kind and most of the car audio wiring diagrams listed on our enthusiast website are submitted by the Modified Life community. Use of the Honda Accord wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 1999 Honda Accord.


If you have any questions pertaining to the audio system in the 1999 Honda Accord, please feel free to post it at the bottom of this page and either we’ll do our best to find you the information you need or hopefully someone in the Modified Life community will have the information you’re looking for.

Request a Car Stereo Wiring Diagram

If you can’t find a particular car audio wire diagram on Modified Life, please feel free to post a car radio wiring diagram request at the bottom of this page and we’ll do our best to find you the diagram or schematic you need for your mobile audio installation.

Adding More Information

If you would like to help the Modified Life community by adding any missing information or adding a new car audio wire diagram to our resource, please feel free to post it at the bottom of this page.

1999 Honda Accord Car Audio Installation Guide

Radio Constant 12V+ Wire: White/Green
Radio Ignition Switched 12V+ Wire: White/Red
Radio Ground Wire: Black
Radio Illumination Dimmer Wire: Red/Black
Radio Antenna Trigger Wire: N/A
Radio Amplifier Trigger Wire: N/A
Front Speakers Size: N/A
Front Speakers Location: N/A
Left Front Speaker Wire (+): Blue/Green
Left Front Speaker Wire (-): Gray/Black
Right Front Speaker Wire (+): Red/Green
Right Front Speaker Wire (-): Brown/Black
Rear Speakers Size: N/A
Rear Speakers Location: N/A
Left Rear Speaker Wire (+): Blue/Yellow
Left Rear Speaker Wire (-): Gray/White
Right Rear Speaker Wire (+): Red/Yellow
Right Rear Speaker Wire (-): Brown/White

The 1999 Honda Accord radio wire color information above is updated as it is submitted by the Modified Life community.

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  • Reply hadrian farrimond July 7, 2007 at 2:18 pm

    i have 1999 accord and it comes with some kind of subwoofer on the back parcel shelf??? i have found a feed for the amp and powered that but were can i find the feeds for the sub woofer

  • Reply ModifiedLife July 13, 2007 at 1:22 am


    We are not aware of any factory subwoofer that comes with the 1999 Honda Accord. As far as we know the rear deck only houses two factory speakers. Hope this helps.. good luck.

  • Reply Quan Lin November 5, 2008 at 11:53 pm

    What is the red wire for? Looking for the remote wire and red wire seems to be the only one left.

  • Reply ModifiedLife November 10, 2008 at 4:45 am

    Quan Lin, technically you could connect your amplifier turn on wire to the radio switched 12v+ wire. That way your amplifier is on whenever the car is on and off whenever your car is off. Just make sure to run an in-line fuse holder with a 1-amp fuse on the amplifier turn on wire. Hope this helps. Good Luck.

  • Reply Quan Lin November 10, 2008 at 8:37 pm

    My car battery keeps dying every morning. My friend and I have been testing this for the past week and can’t seem to find an answer. Battery was tested at autozone to to be good, and the amps don’t seem to be the problem either. I was wondering what was causing my battery to die out every morning. Amps turn off when car turns off, everything works fine. The only problem that I may suspect is the wiring on the stereo. I found the amplifier remote wire on my headunit and just used that. Do you know what the red wire is for? That’s the only wire not used by my headunit and the diagram above doesn’t seem to have what the red color wire is.

  • Reply tim June 13, 2010 at 2:22 pm

    have alpine in 99 accord and the rear speakers stopped working. I swapped with a kenwood out of my truck and same thing, no rear speakers. Alpine works fine in truck. What could it be. I have a hard time believing both speakers stopped at the same time. System has been in the car for over 5 years with no problem.

  • Reply ModifiedLife June 16, 2010 at 11:52 pm

    Tim, if your radio works just fine in a different vehicle then your factory or after market amplifier may be faulty. We suggest you replace the factory or aftermarket amplifier. Hope this helps. Good luck with your 1999 Honda Accord amp troubleshooting.

  • Reply Justin June 24, 2010 at 9:53 pm

    I installed an aftermarket head unit in my 99 Accord coupe several weeks ago and had both an illumination wire and dimmer wire coming from the factory harness. I decided (dumb mistake) to connect both wires to my head unit’s illumination wire without checking switched voltage. Now none of the lights on my dash work (instrument panel, a/c control etc). No blown fuses and both of the illum wires show 12v with the lights on. Any ideas? I am stumped.

  • Reply Evan September 6, 2010 at 2:45 pm

    Hi There! I’ve got a 99 Accord with a CD player AND a cassette player (the cassette player is in the compartment underneath the stereo, above a storage compartment and 12V electrical plug-in. I was wondering if it would be possible for me to take out the cassette player and install an auxiliary audio cable for my iPod in its’ place. I’m not too great with cars, but I’m pretty good with technology and following directions. Also, my CD player keeps giving me error messages – would it be smart just to get a new stereo even though this one has the built-in security system? Thanks, Evan.

  • Reply ModifiedLife September 8, 2010 at 10:05 pm

    Evan, an automotive auxiliary input adapter will allow you to input any mp3 player or portable music player into your factory radio. This is the easiest and most cost effective way to add an audio input into your factory stereo. Here is the adapter you will need:

    Auxiliary Input Adapter for 1999 Honda Accord

    If you’ve never installed car audio before, we advise you to take your car to an experienced mobile audio installer. Hope this helps. Good luck with your 1999 Honda Accord aux input adapter installation.

  • Reply Evan September 15, 2010 at 4:25 pm

    Does that transmit to the stereo via FM channel or is that linked in directly to the car stereo? Thanks.

  • Reply ModifiedLife September 20, 2010 at 11:08 pm

    Evan, that auxiliary input adapter does run on FM frequency but not through the air. It provides an audio signal directly to the back radio through the antenna plug so there is no interference. This interface is specific to your 1999 Honda Accord.

  • Reply benjamin ricardo October 1, 2010 at 10:00 pm

    hello i like to take a moment to say that your guys are awsome and i will writte if i need your guys thank you very much!

  • Reply ModifiedLife October 5, 2010 at 7:59 pm

    Benjamin, we are happy we could help you with your 1999 Honda Accord stereo wiring diagram needs.

  • Reply wesley May 19, 2011 at 1:32 am

    you seem to be on point with the 99 accord radio color code but based on your codes and process of elimination i am left with 3 wires , a red one, a blue one and a black one. im bringing this up because i would like to know if my harness is missing a wire or if it has 1 too many please tell me what u think. anyone? thanks.

  • Reply ryan July 29, 2011 at 10:21 pm

    To install 6 1/2″ speakers in the 99 honda accord front doors do I have to take the door panels off?

  • Reply ModifiedLife August 4, 2011 at 10:02 pm

    Ryan, yes you will have to remove the door panels in your 1999 Honda Accord. Most door panel removals can be done with a Phillips screwdriver and door trim removal tools. Just look for screws at the edge of the door panel, near the door handle or inside the door pull. Once you remove all the screws or plastic tabs, you should be able to use the door trim removal tools to pull the door panel off with ease. Hope this helps. Good luck with your 1999 Honda Accord door panel removal and speaker installation.

  • Reply gene August 17, 2012 at 10:13 am

    I’ve purchased a 99 Honda accord and the back speakers are not working. I’ve replaced the stereo with a factory Honda stereo. They are still not working. No power to the back speakers. Is there a stereo amp? If so, where is it located?

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