audio wires in my trunk?
 

I was cleaning out my trunk recently and I noticed 3 wires in my trunk and I wasn't sure what they were for. I was thinking audio cables but im not sure. one isn't shown in the picture Im pretty sure that its a ground wire but what are these two?

car phone
 

I had posted this on another car forum and someone suggested a car phone and I remember my grandpa having one when he owned it for a little while. I think thats what it is.