Need help with the 6 speaker wiring. Please
 

I read all 18 pages and I see the wiring setup for front doors and rear doors blazers but not for ALL SIX.

I just bought a 1998 4 door Blazer LS. It has two dash, front door and rear door speakers. Only the front driver side dash speaker works. I was trying to get the colors match up for all 6 speaker wires. Not just the doors. Eventually I'm gonna replace all speakers and the head unit.

Thanks

2005 Chevy Blazer
 

Switched power wire
 

I successfully have my aftermarket radio installed. I did some soldering and converted the radio rca plugs to speaker wire to still run the factory Bose amp and speakers. Where I'm having trouble is where exactly to hook the switched 12v wire so that my radio does not power off when i turn the key off but rather when i open door ?

Aftermarket stereo size
 

Hey i just got a 03 trailblazer the person i got it from already has a aftermarket stereo installed but its some what hard wired mixed with his own wiring to get it to work but I'm planning on redoing it the right way and was looking at putting a new touchscreen stereo in but before i even start messing with it and end up having to cut stuff to make the stereo fit was wondering with all the different sizes stereo what size for a touchscreen stereo fit in the trailblazer just right so i dont have to modify or cut anything to makie it fit