Question: Where can I find a 1999 Pontiac Firebird radio wiring diagram? What are the 1999 Pontiac Firebird radio wiring harness color codes?
If you’re planning to upgrade the radio in your 1999 Pontiac Firebird or troubleshoot issues with your car stereo, this guide is here to help!
Our comprehensive 1999 Pontiac Firebird radio wiring diagram shows all the radio wire harness colors, speaker wire colors, and speaker sizes. Use this head unit pinout guide to help with your car stereo installation or to troubleshoot radio wiring issues in your 1999 Pontiac Firebird.
In This Guide
1999 Pontiac Firebird Car Stereo Wiring Diagram
This 1999 Pontiac Firebird radio wiring chart shows you all the 1999 Pontiac Firebird stereo wire color codes and their radio wire functions. This easy-to-follow guide can help you install a new car stereo or figure out problems with your stereo wiring harness and radio setup. If you don’t see the car radio wiring information you’re looking for, please feel free to ask your question at the bottom of this page.
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Car Radio Battery Wire (Constant 12v+) | Orange |
| Car Radio Accessory Wire (Switched 12v+) | Yellow |
| Ground Wire | Black |
Use a Wiring Harness  and Dash Kit  for an Easy Install! |
|
| Illumination Wire | Gray |
| Dimmer Wire | Brown |
| Antenna Trigger Wire | Pink |
| Car Radio Amp Trigger Wire | N/A |
| Amplifier Location | N/A |
1999 Pontiac Firebird Speaker Wiring Guide
This 1999 Pontiac Firebird speaker wiring chart shows you every speaker wire color and the speaker wire polarity. Use this 1999 Pontiac Firebird chart makes it easy to identify each wire and where it connects. If the car speaker wiring information you’re searching for is not listed, please don’t hesitate to ask for it at the bottom of this page.
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Front Left Speaker Positive Wire (+) | Tan |
| Front Left Speaker Negative Wire (-) | Gray |
| Front Right Speaker Positive Wire (+) | Light Green |
| Front Right Speaker Negative Wire (-) | Dark Green |
| Rear Left Speaker Positive Wire (+) | Brown |
| Rear Left Speaker Negative Wire (-) | Yellow |
| Rear Right Speaker Positive Wire (+) | Dark Blue |
| Rear Right Speaker Negative Wire (-) | Light Blue |
| Use a Steering Wheel Control Adapter to Keep Your Steering Wheel Controls. | |
1999 Pontiac Firebird Speaker Sizes and Locations
This 1999 Pontiac Firebird speaker guide includes speaker sizes, speaker locations, and helpful info on speaker upgrades. Use this chart to find out what size speakers fit your 1999 Pontiac Firebird.
| Application | Speaker Size/Location |
|---|---|
| Dash Center Speaker Size | N/A |
| Dash Center Speaker Depth | N/A |
| Dash Center Speaker Location | N/A |
| Front Tweeter Size | N/A |
| Front Tweeter Depth | N/A |
| Front Tweeter Location | N/A |
| Front Speaker Size | 6 1/2″ Speakers |
| Front Speaker Depth | N/A |
| Front Speaker Location | Front Doors |
| Rear Tweeter Size | N/A |
| Rear Tweeter Depth | N/A |
| Rear Tweeter Location | N/A |
| Rear Speaker Size | 6 1/2″ Speakers |
| Rear Speaker Depth | N/A |
| Rear Speaker Location | Side Panels |
| Subwoofer Size | N/A |
| Subwoofer Depth | N/A |
| Subwoofer Location | N/A |
Questions and Answers
If you have any questions about your 1999 Pontiac Firebird radio installation, please don’t hesitate to post them at the bottom of this page. We’re committed to finding the answers you need, and members of the Modified Life community may also provide valuable insights into the car stereo information you’re looking for. Don’t hesitate to ask your car audio question; it could benefit others seeking the same answers!
Contribute
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3 thoughts on “1999 Pontiac Firebird Radio Wire Guide”
I have a 99 firebird completly stock…no monsoon audio. I pulled the stock cd player out and there were 3 of the same colored wires….what do i do to hook them up…kinda confused here…
I have a 1999 pontiac firebird with a stock radio. I bought aftermarket subwoofers for it and i dont know what i need to hook the wires from the subs to the monsoon radio. Can someone help me?
Kevin, you will need some aftermarket electronics to hook up a subwoofer to your 1999 Pontiac Firebird factory stereo. You will need five components:
1. Car Subwoofer
2. Car Subwoofer Box to house your car subwoofer.
3. Car Audio Amplifier that matches your subwoofer power needs and ohm rating.
4. Car Amplifier Wiring Kit that can handle the power needs of your amplifier.
5. RCA Line Out Converter to feed an audio signal from your factory radio to your aftermarket amplifier.
First run all your amplifier power from your car battery to where you plan on mounting your amplifier. Next, run your ground wire from your grounding point to your amplifier. Instead of wiring your RCA Line Out Converter to your factory amplifier, wire it to the rear speaker wires to get a full range audio source. Next, connect one end of your RCA jacks to the Line Out Converter and the other end of the RCA jacks to your amplifier. This will provide an audio signal to your after market amp. Lastly, connect your subwoofer to your after market amplifier using the speaker wire in the amplifier wiring kit. 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 Pontiac Firebird amplifier and subwoofer installation.