I am going to install a 6.5" Powered Bazooka Sub in my 2006 325i. I need to locate the speaker inputs on the rear speakers to splice the wires and send left/right signals to the sub.

Question: How do I access the rear speakers in the 2006?

I have done a number stereo installations over the years, but I can't seem to figure out where and how to get to the speakers.

Thanks in advance for any help.