1987 Mustang gt loose wires under dash

ive got my 87 gt i just took the dash out for painting, went to clean up some wires, ive got loose ends in a few places and some loose factory plugs mostly in the radio harness one brown one grey among a few smaller ones in various places, i dont know if the plugs are for options my car didnt come with but i wanted to get a diagram or a picture of how its supposed to be like to see if i could snip these or tie them up somewhere. thanks