[MikeVJ]

At least it's a mystery to me... I was installing my OEM Fog Light Switch this morning, and while I was looking for the connector behind the blanks in the dash, I found:
A) Fog light connector on the left and B) ??? Connector on the right.

Is this another feature that Toyota installed, that I can add by simply buying another switch?
What is it for?

 

[donb01]

On my 2009 that 3rd hole is the inverter 100/400W control switch.

 

[bigmooze]

On the topic of adding the fog lights, where did you find the connectors for the fog light bulbs? Are they wired and ready to go, just tucked away somewhere?

 

[08TRDOFFROAD]

All Tacomas come with the same wire harness regardless of trim level. The first one is for your fog lights, there should be another one in the middle for a locking rear diff, and the third is for the bed outlet on the TRD models or vise versa, I am having a brain fart, anyways there are two others one for the bed outlet and the other for locking rear diff.

You can add the other switches, but it won't do you any good as there are several other parts that your truck is lacking to get the functions to work correctly.

 

[MikeVJ]

On the topic of adding the fog lights, where did you find the connectors for the fog light bulbs? Are they wired and ready to go, just tucked away somewhere?

Yes, they were already there (taped to the inside of the fender up behind the headlights). I was able to reach them from underneath (lying on the ground).

Then I installed the factory relay and the factory switch.