I just went and looked at mine. The light under the hood has the switch built into it, and a single black wire to power it. So, probably not.

 

So i went out last night to trace the wire through the firewall and discovered that someone before me had installed an aftermarket remote start so that could be what its from. Where it came into the firewall there was a circle cut in the foam which was placed back over it but I dont believe its factory.

I also discovered that my vacuum reservoir was destroyed to I ordered a replacement but I am curious if that grommet is in fact OEM or if the vacuum line for the ac comes through with the wire harness. I have looked all over and I cant find much information on the HVAC vacuum line and how/where it goes through the firewall.

Ill attach the photos

Close up view of pottential HVAC vacuum line

Wide view of pottential HVAC vacuum line

Grommet for mystery wire, or possibly vacuum line

 

Someone on a seperate thread confirmed it was but Im not sure if anyone knows where I can find the replacement hose that goes to this. I believe theres one with a green and one with a red connector. Any help is appreciated