If you are replacing the factory radio that shipped with your automobile, the car probably has a wiring harness you can tap into when installing a new stereo. The wiring harness for a pre-existing stereo usually negates the need to wire the new radio for power and ground. However, if you want to add a radio to a car without one, you may have to wire power and ground for the unit to the vehicle’s fuse panel underneath the dash. Although installing new electrical wiring for the radio may seem complicated, it’s relatively simple as long as you are comfortable using a few hand tools and know some basic wiring methods. Writer Bio
