Audio Systems: Bass Tube install in 06 Toyota Corolla w/ OEM stereo, toyota corrola, power brake booster

Question
Hi

I've looked around this site and unfortunatly haven't found an answer to my question, so I thought I would submit it to you.  I have a powered bass tube that I want to install, but to do so I need to find the remote and RCA output from the original stereo.  Its and O6 Toyota Corrola with an indash 6-CD changer and 6 speakers.  I'm not sure the what the best way to access the stereo is, and if/when I do get to it, if it'll have the required outputs.  Also, I'm wondering if you know the best way to route the power from the battery to the trunk?  Should I send it through the firewall with the other cables or is there an alternative route?  any information is greatly appreciated.  thanks

Answer
hi:
this radio comes with a 4 channels amplifier and the amplifier is behind the radio   you can go there and look for the remote wire and take the rear speaker wires and plug a hi/low adapter
or there is a new hi/low/remote adapter that can be mount in the rear deck and plug in to the speakers
you can find this at your local car audio store or call 1-888-231-0395 to order one they are $15.00
for the power wire  there is a hole next to the power brake booster you can run the batt cable fron the engine  compartment in to the car and then under the carpet  
satay away from the fenders or doors
good luck