Toyota Tundra Stereo Wiring Diagram | Free Wiring Diagram Variety of toyota tundra stereo wiring diagram. A wiring diagram is a simplified traditional pictorial depiction of an electric circuit. It reveals the parts of the circuit as simplified forms, as well as the power as well as signal links in between the gadgets. 2014 Tacoma Wiring Diagram | Tacoma World Yes but that’s pretty old and I think they changed somethings. The engine control wiring in that diagram doesn’t match the 2013 one I found. I have a big project and I need to 100% sure on the wiring. So I think I definitely need the 2014 wiring diagram. I know I can go access it on Toyota’s website, but figured I’d ask here first.