A Hertz audio wiring bundle is the most reliable way to connect speakers and other stereo components to the power source. These professional speaker installation kits include power cables, wiring terminal blocks, fuse holders and everything else you need. Multiple wire gauges are available to send the best signal to tweeters, subwoofers, amplifiers and other equipment. Do your own terminal block wiring with the right supplies and lifetime tech support from OnlineCarStereo.com.