2016 SR5 Tundra Buttons

Installing a trailer brake system on a new to me 2016 Tundra SR5. While I have the lower dash taken apart (see pics) to access the factory wired plug (white)I noticed two other black plugs also wired in. While I have the dash apart thought I might be able to ugrade some other factory options already pre wired by adding the proper buttons.

Question: Anyone with a higher model know what these black connections are for or have a pic of their dash buttons to the right of the steering column?

 

I think it’s for the parking sensor, and the tow haul mode. I’m in a 2019 limited crew.
Yep that’s what they are.

 

Thanks, appreciate the quick reply, was wondering if there is aftermarket or OEM ones availlable, but now I know what to start looking for down the google rabbit hole

Wondering if it is just that simple (like the brake controller) just need to buy the tow haul button and install it or if there is other requirements.

 

The parking sensors require the little circle sonar sensors on the front and rear bumpers, no idea if the sensors are pre wired or not but if they are you'd still have to drill the holes in the bumpers for them.