Missing from engine bay?

[SuperBrett]

Hi guys, poking around the engine bay today after a thorough exterior detailing and noticed something unusual. Upper left corner of the bay, I have three unattached wire connections. And, what looks like a nice empty spot on the firewall, where something (?) could have been? Attached a picture to help with the clarification. Had this 3 weeks now, and I don't know why it's just now catching my attention.
Any ideas?

 

[SuperBrett]

Second picture, close up of wire connections

 

[Manhattan]

If you had AHC, you'd have a reservoir in that spot. But, since you (fortunately) don't, it's a great spot to mount a little compressor

 

[SuperBrett]

If you had AHC, you'd have a reservoir in that spot. But, since you (fortunately) don't, it's a great spot to mount a little compressor

Or another battery! Thanks, I googled pictures, but to no avail.

 

[hankinid]

Or another battery! Thanks, I googled pictures, but to no avail.

Do your daytime running lights (DRL's) work?

Steve

 

[SuperBrett]

Do your daytime running lights (DRL's) work?

Steve

Yes, DRL works....I haven't found anything that doesn't work that I know of..... Yet.

 

[jemsec]

Those would be for an AHC if you had one. Keep looking you will find plugs everywhere for stuff most don't have

 

[fireball]

Yep, that's for the AHC reservoir and wiring connections. The Slee aux battery tray fits nicely in that spot if you ever want/need a 2nd battery.