I need to know the wiring colours for a 70's clarion radio cette, PE 587 there's 7 wires.?

The wires are speaker ground Wt/Blk, speaker rght + Wht/Red, speaker lft + Wht, Ground Blk, then I have red, blue and blue/yellow. The blue has an inline fuse so I ume it is the power and I ume that one of the others is to the powered antenna, but thats all the info I have