One call to Crutchfield was all it took to get everything needed to improve the Unlimited's sound system. They not only sent the hardware, but also shipped a complete installation system for the TJ. This included all adapter plates, patch cords, speaker adapter wires, and trim plates needed for an easy and successful installation. They also included a Crutchfield Guide for installing each component. These step-by-step instructions take the guesswork out of a do-it-yourself installation.