What are these cables in my trunk?

[goldfishe666]

Hey guys, just bought an e30 coupe. I found these 3 cables in my trunk. 2 seem to be audio related maybe from a sub install in the past.

But there is 1 cable with lots of connections inside and I am wondering what it is. Does not look like audio cable to me, but I may be wrong. Any input? They are all next to the factory jack area.

Thanks

[justin_l_]

RCA cables and a cd changer cable it looks like to me.

[BlackSpeed66]

The black cable for what appears to be a CD changer may be factory but the RCAs are most definitely not.