Fog light switch on signal bar

Hi
Looking to add fog lights to my 2013 prius. I understand that there is a fog light switch on the signal bar left of the steering wheel. Has anyone added fog lights and change the signal switch instead of installing a button on the blanks?

 

Just to clarify, I know that there is a fog light on/off switch on the signal bar for prius that come with fog lights. Has anyone added fog lights to a prius that didn't have fogs originally and replaced the signal bar instead with the fog function instead of installing a button.

 

Thank you. This is very helpful.

 

Just to update
Short version is that I am going with the button route.

I purchased the parts based on some links on the postings but I wasn't aware that if it long exists my browser does a search on a similar item. I bought a fog wire kit but received a wrong button (correct size is 32mmx22mm or something like that) then I bought a stalk with a fog but missing the drl that I currently have.... Also unsure where the 2c connector pin 8 and how it is connected and if there are existing factory relays. I really have no time to research and I always feel like I am in over my head on every project so I will decide in the future whether to take on replacing the stalk.... also auto lights, since the proper stalk has auto lights function, I can't really just ignore it. Too fresh in my memory of just putting in the fogs and threading through firewall and wrong parts.

 

I saw some on previous searches but can't find them now... I should have wrote it down for future reference... it takes a lot of time to track it. It was selling for around 150.00

 

The 150.00 I saw had Drl, fog and auto.

 

Just to update that the fog lights were a little disappointing so far. I saw good reviews for the Morimotos XB and decided to purchase them, but it is really not that bright. The pictures I have seen online appears brighter and when seen from the outside and against the garage door, you can see the beam very clearly, but the actual difference on the road is very minor. I've heard people complaining that fog lights are not very helpful, but I guess it is one of those project you have to do it and see for yourself to be satisfied. Also, I didn't put the yellow lamix on mine, maybe it would have made a difference? At least the car looks nicer with the new lights.

 

Thanks for info
Another update, I am not the most conscientious diyer and I didn't adjust the beam level.
I have just done it and it is now significantly better than before. Thus, I think the morimotos are actually pretty good, and I will wait and see on the next rain storm or a drive in a very dark area.

 

I think I will go ahead with the new signal stalk to include the fog... I found this stalk which includes a control pad (under the signal switch) maybe originally for steering wheel position adjustment?

Didn't notice it when I made the purchase. It was listed as a toyota part and it fits 2013 prius.

 

Ok, just removed the part and confirmed that it was from a Lexus for the steering wheel adjustment.

 

I checked on the auto headlight mod and initially thought this stalk includes the switch but the "auto" labeled on the switch may be drl. I think someone mentioned it is labeled "auto" in Canadian models?

I might just sell the pad. I don't want to mess with it too much. Initially, I wanted to avoid going through the firewall so I hoped that the switch can help me avoid it... also, a set of bright usable lights. Not satisfied with the morimoto Xb. I am returning and upgrading. I am just investing more and more just on the fog. Should stop now, the car is getting old.