Mercedes clk w209 aftermarket sub and amp

[Ignacio02]

Hello guys and girls, i got a clk280 2006 , I'm thinking of fitting an active subwoofer or sub and amp combo but i have no idea where to grab the remote power and ground cables? I've got a underseat sub connected in the boot ( previous owner) which has its own wiring cables connected together, ( Inphase usw 10) let me know please would really appreciate.

Stereo is comand with sat nav etc model BE 6099

 

[JoolsB]

The original CLK sub (for the soft top anyway) is between the rear seats. I dont have it in my 350 and had a look to see if the wiring was there so i could retrofit - alas no, so i gave up on the idea because i couldnt see anywhere else to do it, but it may be worth having a look there.