Audio House's fully insured, MECP-certified installers carefully wire vehicles with an assortment of auto-enhancing devices and accessories. Remote-start systems let owners rouse slumbering motors at a distance, and car alarms from such top manufacturers as Viper and Auto Page unleash a barrage of honks, beeps, and freight-train noises to alert drivers of would-be thieves. In-dash GPS systems put hassle-free navigation at drivers' fingertips, and device-integration services couple mp3 players and cell phones with existing audio infrastructure. For an entertainment upgrade, the crew can install mobile video accessories and add tinted windows to shield cars from passing bikers trying to sneak a peek of the in-cabin movie.