Noob needs head unit install help

[Kristeun]

So my old Sony head unit took a crap and I'm getting this:

http://www.crutchfield.com/p_113MP538U/Kenwood-KDC-MP538U.html?cc=07&tp=5684&tab=features_and_specs

The only one I could find for under $150 with CD/ipod support/3 sets of pre-outs. I bought the car with two amps (?) and a sub in the trunk. Tried searching but am still very confused. Since I already have an aftermarket unit in there would install be relatively simple (plug and play)? Or will I need to do wiring/get some sort of install kit? Any good guides out there? Sorry for being a complete noob.

[bmw325csi]

If your car already had an aftermarket deck, you will need to wire up a few wire (+12, ground, illumination, power antenna) And the rest should be RCA's. Its relatively easy if you look in the owners manual for the headunit

[Philo]

Clarion dxz785usb is another HU that meets the specs for the money. If you haven't already purchase the other.

[StereoInstaller1]

Remember on that Kenwood that the blue goes to white and the blue/white goes to whatever turns the amps on, generally a blue wire.
GL!

ps I love that deck.