Wiring Diagram for the audio of a 97 prelude?

My friend bought a 97 prelude three days ago. he had the dealership take the old head unit out so he could put his alpine in. the problem is that there is not a clip coming out of the car (so we can't just buy a wiring harness and clip it in like usual). we have to hard wire everything. we've checked all the manuals out there and even went to some car audio stores. but being the little butts (in replacemen of other words) we can't get a wiring diagram for the wires. does anyone know which color wire is for what or know of a site that will have wiring diagrams? much help is appreciated as he his riding wit out tunes for now.