http://www.the12volt.com, tons of info about stereo wiring diagrams
[edit]
Here I got the diagram for you...
1994 Honda Accord Stereo Information
Constant 12V+ ............................ Blue/White
Switched 12V+ ............................ Yellow/Red
Ground ....................................... Black
Illumination ................................. Red/Black
Dimmer ....................................... n/a
Antenna Trigger ........................... Yellow/White
Antenna ..................................... Left Rear
Front Speakers - 6 1/2" Doors
Left Front (+) .............................. Blue/Green
Left Front (-) .............................. Gray/Black
Right Front (+) ............................. Red/Green
Right Front (-) ............................. Brown/Black
Rear Speakers 6" x 9" - Rear Deck
Left Rear (+) ............................... Blue/Yellow
Left Rear (-) ............................... Gray/White
Right Rear (+) ............................. Red/Yellow
Right Rear (-) ............................. Brown/White
Hope I helped.