http://ccs.exl.info/civic_radio.html
or do I need an adapter...so what if i change the head unit I lose the dome light? I was told I have to leave the og radio in or get an adapter or it wont work...what is the real issue and how can I install a new solid head unit? I found a bunch of nice small one with remote and mp3 ability for $120-$150

 

just keep the stock radio powered and the green plug connected to it
simple as that
They sell them at best buy, circuit city, wherever

 

So install it behind the cup holder right?

 

yup.. that way u dont loose the keyless entry...

 

install it where you want