I need to get to the audio wiring
you cannot simply go with matching the colors factory radios have extra wires that are not needed with an aftermarket install most of the time (wires that control the dimmer on the radio, speed sensitive volume) you will need three power wires (constant, ignition, and ground), plus your speaker wires use a test light to test your wires, usually at the radio the yellow wire is your constant, the red is your ignition, and black is always ground to find your constant use the test light, it will be hot at all times so that your radio can remember the time, and your settings- next you need your ignition, it is only hot when the key is on or in the accessory position, to tell the radio when to come on- the ground is self explanatory to find which wires go to what speakers all you need is a 9v battery, put the positive end to a wire and test all of the other wires to the negative side and you will hear a crackling noise from a speaker when you have the right combination
