JBL or not?

I have a 2009 trd that I bought second hand in 2013. The truck came with an aftermarket head unit (sound storm labratories touch screen)and the screen crapped out on me about a year later but the auxiliary port still worked so I used it with just that up until now.
I have a

$320 pioneer avh x4800bs 2-DIN receiver with 7" motorized display/built-in bluetooth/siri eyes free/appradio

pioneer avh x4800bs and I have it all installed but the back speakers don't work.

I'm not sure if I have a JBL system or not but I ordered the non JBL wiring harness. I searched around and can not find any pics of what wires are behind a JBL system.
I've seen videos of installing a new deck into a similar year tacoma and I have all the same connections but I have anot her wire back there with a black male connector that was not in the few videos I watched. Does this mean I have a jbl system?

Also I have steering wheel controls.

 

If you look on the speaker panel on your door it should have a JBL logo on it. Or pull back the rear passenger seat and see if you have the factory sub back there...

With JBL Amp and Sub


Without JBL AMP and Sub.


If your connector in the back looks like the top one in the picture below you have a JBL system.



If you do have a JBL system you will need a line out converter (Like this one) to make it work with your pioneer. Or, I have a 2013 factory JBL navigation radio I have listed for sale (shameless plug).

 

Ok I for sure don't have the JBL logos or the subwoofer behind the seat so I guess I don't have a JBL system but I still can't figure out why my rear speakers are not working.

The reason I asked if I had a jbl system was because the other crappy head unit I just took out had a lot more to the wiring harness than this one does and I'm not sure why.

And also I was looking at the factory rear speaker connection in the truck and there are 5 pins in it and the harness that plugs into it (the one I bought from crutchfield) only has 4 pins in it.

I found it odd so I looked on the harness I pulled off the crappy one and it had 5 pins, but the 5th pin was a wire that was capped off and the wire was labeled dimmer (it was orange and white or maybe yellow and white can't remeber)


Edit: I have checked the fader and I I have rest the whole system to try to reconfigure it all.
I also checked all the connections. I'm stumped

 

Here is a picture of the wiring harness pulled from the old crappy deck
You can see the bottom connector having 5 pins. That's the one for the rear speakers


And this is the full harness. Fuses everywhere and some weird fuse box?? Idk what this is for but I'm assuming it came with that deck

the pic above is the old crappy deck that rattled louder than it could play music

Here is the wiring harness that I have in the vehicle. The black one is the one that I'm concerned with because idk what it is, steering wheel control maybe? ive also never seen it in the steering wheel control write up i seen. But every video/ write up I've seen for tacoma does not have this connector. It was also NOT connected with the old deck. The blue is for the rear speakers.

This is the wiring harness that is currently connected for the rear speakers. Notice only 4 pins.