All of the major components of the Boss Audio MCBK450 Motorcycle/ATV Sound System such as the spider/surround for the speakers and the connections for the amplifier have been specially coated and sealed so that they have the protection that they need from the damaging effects of the elements. Be sure to run the wiring securely and far away from any moving components. Connecting the power cable to the power source: you will need to connect the 12 volt red wire to a (fused 10A) switched power source. Use the 3.5mm stereo jack to connect your entertainment source (MP3 Player, smartphone, etc). Use your player device and your volume controller to control the desired level of loudness.