Just got a 2010 base fit,

Questions are as follows, the stereo output is 160w * 4(no tweeters) now is that 40w per channel? because the front speakers a sound more powerfull than the rear, or are the rear speaker of lower quality?
Where could I find diagrams or ilustrations with steps on how to take out The HU and The speakers. I have found a few posts with pictures, but I was wondering if there were actual diagrams anywere.

 

The radio is very simple as far as removal I scanned my metra book so you can see. The door speakers I do have info on, go to my stereo log and I have lots of photos on removing the speakers from the front doors of my 09 which is just like your 10.

 

Root around this sub-forum and you'll find all of the information you need. Start with caveman's excellent photos and advice, and there's some information in my posts as well. All four door speakers are identical. I'd like to see a wiring diagram too, however, especially to get a sense of how the tweeters are connected.