2017 toyota 86 speaker wiring
 

Hey guys, so I just bought a new 86
And as you all know the speaker system isn't the greatest.
I'll be replacing the head unit as well to get the features the stock unit lacks
Like xm radio. I'm adding the JL stealthbox and a Alpine PDX-V9
To power subwoofer, rear and door speakers. My question to you guys is
Has anyone with a 2017 86 replaced the speakers and head unit?
And how did you go about taking off the dash piece piece off since it's a single piece and not 2 pieces like the fr-s/BRZ
If so, what harness did you use to retain the steering wheel controls.
Another question is, since I can't find a website that has the stereo wiring diagram so I know what wires go to which speakers i.e. front left, front right
Rear left, rear right and so on, what should I use as a guide ??


Any recommendations or suggestions help