Replacing front 3 way set with aftermarket/wiring/JBL

Good day. I have a 2014 CM 1794 with the JBL.
The head unit has been replaced and I'll be adding an amp and speakers.

I know that the center speaker and the wiring that goes to it changes things as far as upgrading the front speakers.
I'm adding a 3 way set w/ it's own crossovers. Will I need to pull new wire into the dash for the midrange or into the door for the tweeter? I hope this makes sense. I know the wiring makes a loop to the center channel speaker. That's what has me confused.

 

Welcome to the forum.
You can find your wiring diagrams here, complete with locations and connectors, including wire color and connector pin numbers.

Ultimate TUNDRA Wiring Diagrams Collection | Toyota Tundra Forum

On your JBL all speakers are powered from the underseat amp.

Front door's lower speaker has its own lead
Side dash and front door tweeter on the same lead for each side
Each rear door has one lead that powers both the tweeter and the lower speaker
Each dash speaker has its own lead.

From the OEM amp:

M8 - RH front door lower speaker
J146 - RH dash > M1 - RH front door tweeter

N10 - LH front door lower speaker
J148 - LH dash > N1 - LH front door tweeter

J150 - center dash

Rear doors, each door has one feed
RH
O1 tweeter
O2 lower speaker
LH
O8 tweeter
O7 lower speaker
P14 - sub output


\\


As far as the center having a LOOP, you may be referring to the non-JBL system.
In the non-JBL, the dash speakers run off the HU.
Signal goes from the HU, to the side dash, to the DVC center.



Unless your amp/DSP has a center channel output, I would omit the center dash speaker..

Good luck..

 

Thank you very much. I'm definitely removing the center channel.
So I can grab the wiring at the kick panel that goes into the door to the woofer, mid and tweeter? Or will I need to run any wire into the dash or door ?