Mystery plug

My first post here!
While installing the lights wiring on the ARB bumper I found a plug behind the passenger headlight that is just hanging there. I wonder what is suppose to be connected there. I have a '17 double cab OffRoad.

 

It seems odd the plug would be left without any protection from the elements. Maybe a Toyota Tech will chime in.

 

It's done all the time on every make.

 

I'll go look at mine and get the wire colors, then see if it's on any of the wiring diagrams. Highly doubtful though.

Maybe they were planning some accessory lights or something. A few older models had some random plugs here and there for accessories, however they usually had caps on them.
Could also be for light or horn or something for vehicles made for other countries.

 

That wiring is attached or taped together with the headlights/turn lights wiring loom between the wiper reservoir and right headlight. I wish I could get the diagrams for the Tacoma.

 

It's a 17. My bet is it's for the Rigid fog lights on the Pro.
Odd though that it has no cap.

 

Which ones are you looking for, specifically?

 

Diagrams? The whole schematics. I have it for my FJC and it helps me a lot finding wiring harness and plugs.