What are these wiring harnesses for?

Here is a picture of three of the four button blanks on the left dash of my 2007 TRD Sport. I know these blanks are for options that the Off Road would have that the Sport does not, but if the Sport doesn't have the options, why the wiring harnesses? I assume the button blank without the wiring harness is the location of the locking diff. button on the Off Road, but what about the other buttons with the wiring harnesses? Are the wiring harnesses actually functional in the Sport; in otherwords, does it just take the switch (button) to make those options work? Sounds pretty unreasonable to me, but just wanted to see if anyone knew for sure?

 

Hmmm . . . too good to be true! Then again, I knew better . . . I just couldn't resist not asking.

Thanks.

 

In order from left to right, top to bottom:
Fog Lights; Rear Diff Lock; Power Outlet main switch
"VSC OFF" ; "DAC" switch; Roll sensing of curtain shield airbags off switch.

VSC: Vehicle Stability Control
DAC: Downhill assist control

Has anyone used the harnesses behind their switch blanks for anything other than what they were intended for? ie. aux lights?

 

http://qrg.toyotapartsandservice.com/pdfs/2009_Tacoma.pdf

I see this question a lot. Here is a link to the Quick Reference Guide. It has descriptions for all of those buttons. You may also be able to find the same info in you glove box.

 

Sorry, just noticed yours is an 07 I posted the 09, but they should be the same buttons. here is the 07 http://qrg.toyotapartsandservice.com/pdfs/2007_Tacoma.pdf

Check pages 2-3

 

Bought used and the quick reference guide wasn't with the truck. Got lazy and didn't grab the manual . . . I guess the internet sucked me in that night!! But that works. Thanks guys for the input!!