Putting Grand National Symphony Sound in El Camino

[Ridgeline]

I hit the salvage yesterday and found a stereo radio with equalizer and all the bells and whistles. I took the back plugs also. Trouble is I don't know where they wire to in my Camino. There are about twice as many wires as I have now. Has anybody out there got a diagram that shows how to install this radio in a common stereo set up.

Thanks,