Question: Where can I find a 1999 Volvo S70 stereo wiring diagram, and what are the 1999 Volvo S70 radio wiring harness color codes?
If you’re planning to upgrade the radio in your 1999 Volvo S70 or troubleshoot issues with your car stereo, this guide is here to help!
Our comprehensive 1999 Volvo S70 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 Volvo S70.
In This Guide
1999 Volvo S70 Stereo Wiring Diagram
This 1999 Volvo S70 stereo wiring chart shows you all the 1999 Volvo S70 stereo wire colors and their functions. Utilize this guide to help you with a car radio install or help with a car radio troubleshoot. 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 |
|---|---|
| Battery Constant Power Wire (12v+) | Red/Yellow |
| Accessory Switched Power Wire (12v+) | Orange/Green |
| Ground Wire | Black/Red |
Use a Wiring Harness  and Dash Kit  for an Easy Install! |
|
| Illumination Wire | N/A |
| Dimmer Wire | N/A |
| Antenna Trigger Wire | Green/Red |
| Amplifier Turn-On Wire | N/A |
| Amplifier Mute Wire | N/A |
| Amplifier Location | N/A |
1999 Volvo S70 Speaker Wiring Guide
This 1999 Volvo S70 speaker wiring guide provides all the speaker wire colors and speaker locations you need for an upgrade or replacement. Whether you are installing new speakers or troubleshooting your factory setup, this 1999 Volvo S70 chart makes it easy to identify each wire and where it connects. If you don’t see the car speaker wiring info you need, feel free to ask your question at the bottom of the page — we are here to help!
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Dash Center Speaker Positive Wire (+) | White/Red |
| Dash Center Speaker Negative Wire (-) | Gray/Red |
| Front Left Tweeter Positive Wire (+) | White/Black |
| Front Left Tweeter Negative Wire (-) | Gray/Black |
| Front Right Tweeter Positive Wire (+) | White/Red |
| Front Right Tweeter Negative Wire (-) | Gray/Red |
| Front Left Speaker Positive Wire (+) | Black |
| Front Left Speaker Negative Wire (-) | White |
| Front Right Speaker Positive Wire (+) | Black |
| Front Right Speaker Negative Wire (-) | White |
| Rear Left Tweeter Positive Wire (+) | White/Purple |
| Rear Left Tweeter Negative Wire (-) | Gray/White |
| Rear Right Tweeter Positive Wire (+) | White |
| Rear Right Tweeter Negative Wire (-) | Gray |
| Rear Left Speaker Positive Wire (+) | White |
| Rear Left Speaker Negative Wire (-) | Black |
| Rear Right Speaker Positive Wire (+) | White |
| Rear Right Speaker Negative Wire (-) | Black |
| Subwoofer Positive Wire (+) | N/A |
| Subwoofer Negative Wire (-) | N/A |
1999 Volvo S70 Speaker Sizes and Locations
This 1999 Volvo S70 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 Volvo S70.
| 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 | 1″ Tweeters |
| Front Tweeter Depth | N/A |
| Front Tweeter Location | N/A |
| Front Speaker Size | 6.5″ Speakers |
| Front Speaker Depth | 2″ Depth |
| Front Speaker Location | Front Doors |
| Rear Tweeter Size | N/A |
| Rear Tweeter Depth | N/A |
| Rear Tweeter Location | N/A |
| Rear Speakers Size | 8″ Speakers |
| Rear Speaker Depth | 4″ Depth |
| Rear Speaker Location | Rear Deck |
| Subwoofer Size | N/A |
| Subwoofer Depth | N/A |
| Subwoofer Location | N/A |
Questions and Answers
If you have any questions about your 1999 Volvo S70 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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2 thoughts on “1999 Volvo S70 Radio Wiring Diagram”
I have a great 1999 s70, and i would love to get 2 12″ subs and an amp in the back, i don’t know if i can just hook this up to the standard deck, or if i need to get a new one, and if i do need to get a new one, how to install it. Any recommendation on what i should do would be very helpful.
Alec, yes you can add a subwoofer to your factory 1999 Volvo S70 radio. You would need five components:
1. Car Subwoofer
2. Car Subwoofer Box
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. Wire up the RCA Line Out Converter 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 Volvo S70 amplifier and subwoofer installation.