2007 Toyota Tacoma | Stereo Wiring Diagram 2007 Toyota Tacoma Stereo Wiring Information. Radio Battery Constant 12v+ Wire: Blue/Yellow Radio Accessory Switched 12v+ Wire: Gray Radio Ground Wire: Brown Radio Illumination Wire: Green Left Front Speaker Positive Wire (+): Pink Left Front Speaker Negative Wire (-): Violet Right Front Speaker Positive Wire (+): Light Green Right Front Speaker Negative Wire (-): Blue Toyota Radio Stereo Wiring Diagrams - MODIFIEDLIFE Damean, as much as we would like to assist you, most of the car radio wiring information listed on our website is provided by our visitors. We currently do not have the 2011 Toyota Tacoma Quad Cab stereo wiring information but hopefully someone from our knowledgeable Modified Life community will know and help you out. 2007 Toyota Tacoma Radio Wiring Harness | Advance Auto Parts Your 2007 Toyota Tacoma might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Radio Wiring Harness product you desperately need. We currently carry 1 Radio Wiring Harness products to choose from for your 2007 Toyota Tacoma, and our inventory prices range from as little as $12 up to $12.