1993 chevy silverado cd player installation

I am needing some help putting a Cd player in a 1993 chevy truck. Does any one now a website that could give the wiring diagram or just tell me what wires to hook to what wires

are you taking out the stock deck and installing one or are the stock wires cut? use a wireharness if possible very easy to do. the factory radio brain is under the dash near steering shaft to the right. take down botom dash panel and 3 7mm screws and pull in down and unplug it. hope this helps.
wire colors are
orange 12v constant
yellow acc switch power
black ground
tan, gray front left
light green, dark green front right
brown, yellow left rear
light blue, dark blue right rear

the light speaker wire color in front is possitive and the dark in the rear is possitive.