How to Install Radio Wiring
Proper installation of wiring is essential when putting in a new car stereo. Study your stereo's manual before beginning the installation process, as each stereo has its own specifications.
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Soldering vs. Crimping
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Crimping and soldering are the two ways to connect radio wires. Verify that you are using the correct size of crimp connector if you crimp your radio wires. Soldering ensures a permanent connection and maximum current transfer, according to Crutchfield.com.
Connecting the Power
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Connecting your stereo's wires through the wiring harness is best. When direct connection is necessary, connect the new power lead to a switched power source so your stereo will turn off when the engine does. However, connect the memory lead to a constant power source so stereo presets are not lost when the engine is turned off.
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Ground Wiring
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Proper ground connection is imperative for your stereo's performance. Connect the ground wire to a screw, bolt or wire that touches the bare metal of the vehicle's chassis. A loose ground connection could lead to signal noise obscuring your music.
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