Adapter harness or Bypass JBL amp under passenger seat?

I can find loads of info on non JBL amp bypass, but I have the JBL system (2016 Platinum).

I already have a Kenwood/RCAs and power ran to the amp. I simply want to use the factory speaker wiring from under the passenger seat out to all 4 door speakers.

Is there a harness I can buy that taps into the speaker input /amp OUTPUTs under the passenger seat and I can feed them with a full aftermarket amp/system?

https://www.autoharnesshouse.com/41112.html

 

I'd try contacting member @james@tech12volts and see if he makes one for JBL

For all your car audio and video needs (tech12volts.com)

I think this is it..

2014 to 2017 TOYOTA TUNDRA JBL WIRING HARNESS (tech12volts.com)

Welcome to the forum

 

From this thread it would appear this harness is compatible with JBL systems, but for whatever reason it says NON JBL. Just need somebody to confirm, Im not doing business with tech12volts so not going to use him for free tech support

https://www.tundras.com/threads/how-to-add-a-new-amp-to-your-3rd-gen-tundra-jbl-entune-system.22527/

 

What bout something like these?
https://catalog.pac-audio.com/catalog/amplifier-integration-harness/aph-ty01

https://www.crutchfield.com/S-3GkupklycII/p_794HARTO3/iDatalink-HRN-AR-TO3-Harness.html

Maybe send them an email to confirm vehicle compatibility.

 

Welcome from NY.

 

I found the non-JBL plugs on Amazon work if you know how to move/add one wire to the plugs. Detailed info here:

https://www.tundras.com/threads/how...a-jbl-entune-system.22527/page-2#post-2734357