newbie stereo help

[kromby]

help guys i want to fit an alpine headunit to my 55 plate a4 sline but getting quite confused by all the different posts, my car has a concert single din headunit and i need to know what leads /adapters i will need to get to fit the alpine. sorry if the questions been asked a thousand times but i was getting mixed up with all the different replys to others questions thanks guys

[Lateknight]

If your Alpine unit has ISO connectors, your laughing.

unless...
You've got Bose sound system.
You want to run Audi's Autochanger (if fitted..obviously)
You've got ISO connector, but the 2 live feed wires are the reverse of the way your Audi is wired (a simple remedy) - one is ignition switch live, one is permanent live.

[kromby]

If your Alpine unit has ISO connectors, your laughing.

unless...
You've got Bose sound system.
You want to run Audi's Autochanger (if fitted..obviously)
You've got ISO connector, but the 2 live feed wires are the reverse of the way your Audi is wired (a simple remedy) - one is ignition switch live, one is permanent live.

no cd changer just single din headunit and alpine is the x100 something can't remember but it controls ipod