94 explorer w/jbl ssys

Hi new to the forums.  Got a question about din plugs for factory amp systems.  I got a 94 explorer w/the jbl sound system.  Previous owner cut the factory harness and din plug for the amp.  I am trying to wire up an aftermarket cd player and just wanna use the factory speakers.  I guess what I am trying to get at is there any way I can wire up the stereo without having to ripout all the interior panels and straight wiring all of the speakers and amp?

Power wires are lt GREEN/ YELLOW = 12 volt constant, BLACK/ green = grnd., yellow/blk. = 12 volt ign., lt blue/red = dimmer, dk blue = amp turn on. The shielded group of smaller wires are amp signal inputs. WHITE/ red = RF+, brown = RF-, violet/white = RR+, lt blue = RR-, lt green = LF+, WHITE/ orange = LF-, blue/black = LR+, yellow = LR-.There is no such thing as free installation!

thanx for the help.  I went out and finally figured it out on my own that same day just took alot of trial and error.  I curse the ppl that do dumb things like cutting the factory plugs!!!  Sorry for the slow reply.  I work odd hours and half a 14 month old son that takes up alot of my time, but thnx again for the info.