1999 Mazda B3000 Truck Car Audio Wiring Chart - ModifiedLife The Modified Life staff has taken all its Mazda B3000 Truck car radio wiring diagrams, Mazda B3000 Truck car audio wiring diagrams, Mazda B3000 Truck car stereo wiring diagrams, Mazda B3000 Truck car radio wiring schematics, Mazda B3000 Truck car wiring diagrams and cataloged them online for use by our visitors for free. Mazda B3000 Radio Wiring Harness | Advance Auto Parts Advance Auto Parts has 2 different Radio Wiring Harness for your vehicle, ready for shipping or in-store pick up. The best part is, our Mazda B3000 Radio Wiring Harness products start from as little as $12. When it comes to your Mazda B3000, you want parts and products from only trusted brands. 1999 Mazda B3000 Pickup | Stereo Wiring Diagram 1999 Mazda B3000 Pickup Speaker Sizes. Audio Front Speakers Size: 5″ x 7″ Speakers Audio Rear Speakers Size: 5″ x 7″ Speakers. The following information is currently not available: Stereo Dimmer Wire Stereo Antenna Trigger Wire *If you know any of the above or any other missing information please use the comment box below to notify us.