Riddle me this... Auxiliary wiring

I have a 2024 Tacoma OR Hybrid. Pretty basic model. Not a lot of over-the-top extras, but everything I want for my needs and wants. One thing it does not have...the aux buttons in the cabin.

Then I noticed all the Aux sockets in the engine bay, rear tailgate, etc.

With regards to Auxiliary Wiring, here's what I have found:

1. All accessible pre-wired Aux sockets are in place throughout the vehicle.
2. Inside the fuse/relay box - the relay sockets exist and have wiring leading to and away from them. (see photo)
3. Get this one - Aux 1 (15a), Aux 2 (10a), and Aux 3 (5a) fuses are in place on the fuse panel.
4. My truck DOES NOT have the Aux 1,2,3 buttons on the dash.

I cannot find the specific harnesses or wiring for the leads to the OEM Aux buttons.
Any thoughts on what might be needed to complete the Auxiliary system?

It really does not seem that hard given what I have found. Does anyone have a better wiring diagram?

 

pull the panel where the switches are. See if the switches are prewired and I think a few companies (Cali raised?) make OEM-style switches for that panel

 

In case this would help you, this is my driver side fuse panel on my Tacoma 2024 TRD Pro. The Aux fuses are on this panel, and you can see the relays too. I have a 2024, so only Aux 1-3.

 

Pulled them. No harnesses or wiring that I can see for the switches. There must be a harness I can tap into...somewhere.

 

I don't know what any of this stuff means so I'm not sure if it's helpful, but I do remember seeing this thread in the past:
https://www.tacomaworld.com/threads/mating-connectors-for-aux-switch-illumination-tap.842914/

 

Thanks for all the insight. It is appreciated.

There's got to be a simple harness route that is missing. A junction where the wire coming off the fuses & relays connect and join with the Aux switches. Makes no sense for it to be overly complicated.