Wiring Your New Radio Using A Snap On Wire Harness Adapter
The Install Doctor STRONGLY recommends using a snap on wire harness adapter when replacing the auto makers factory installed radio with a new replacement radio. These snap on wire harness adapters are custom designed to plug into the auto makers indash radio wire harness that originally plugged into the rear of the auto makers factory radio. Because each snap on wire harness is custom designed to fit only a specific auto makers indash wire harness, these are not included with new replacement radios but can be purchased separately.
Power And Speaker Wires
When the auto makers original factory radio is removed, a dash wire harness will unplug from the rear of the radio. For most vehicles all necessary wires to complete the installation of a new replacement radio will be connected to this in dash wire harness. Power Wires:
(+) 12 Volt Battery Wire (also referred to as the “Constant” wire: (typical replacement radio wire color: Yellow) This wire allows the radio to have a constant power source for the radio to memorize the correct time and to memorize station presets. The vehicles (+) 12 Volt Battery Wire is almost always attached to the indash wire harness that was originally plugged into the rear of the auto makers original factory radio.
(+) 12 Volt Ignition Wire (also referred to as the “switched” power wire: (typical replacement radio wire color: Red) This wire is the vehicles as well as the radios on/off switch. This wire will turn the radio on when the ignition is turn on, and turns the radio off when the ignition is turned off. As with the (+) 12 Volt Constant/Battery wire, the vehicles (+) 12 Volt Ignition wire is almost always attached to the indash wire harness that was originally plugged into the rear of the auto makers original factory radio.
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