All true double DIN head units conform to an automotive industry standard size and measurement, but some units require proprietary mounting brackets or hardware to maximize their compatibility across a range of vehicles. Most installations require disconnecting the car’s battery power, removing the stock head unit, and connecting your vehicle’s power and u003ca href=u0022https://www.popsci.com/reviews/best-speaker-wires/u0022u003espeaker wiringu003c/au003e to the new double DIN head unit’s harness. While this type of installation shouldn’t be too difficult for a beginning DIY-er, it’s important to follow the manufacturer’s instructions carefully according to your specific vehicle’s needs.