a few questions, i didnt find a answer to.

ok as the thread name goes, i have a few questions on my 2010 prius

ok i have the 2010 prius, with jbl audio system. i bought it used. got a really great deal. so im a happy camper.

know ive noticed like many many others ther jbl system favors the front speakers.

at this point i have purchased,

1 - 8in subwoofer, lanzar pro max 8
2 - had left over, 400 wat amp
3 - 16 guage wiring kit.

i do plan on building a box, that will hopefully fit that small cubby compartment holes in the trunk of the car.

my biggest problem and questions are

ive read about the ms-08,
first question, where is the ms-08 located ?
is it the amp looking thing under the passanger seat ?

next question, ive seen alot of wiring diagrams and pictures, that cut in to or add into that device.
does this help with the adding the sound to the rear ?

i saw a video where a guy install his amp to a connecter on the driver side ? the audio from the youtube, video wasnt very good !

so those are my questions and concerns, any tips or questions anyone has please ask.