Wiring help on 94 Bose rear speaker
 

I have a 94 bose rear speaker with the wiring harness coming out of the enclosure. I'm trying to figure out what wires are for what. I think the Brown and Yellow wires are speaker input. I'm not sure about the purple, orange and black. I would guess black is ground, orange 12v and purple the remote but I'm not sure. Any help is greatly appreciated.

ttt still trying to figure it out