What's under my dash?

[merc123]

I was cleaning out the truck and noticed a wire harness hanging down. I traced it to a silver canister (like a tiny vac cylinder) under the passenger side dash. It has black and white wires in the harness. What is it?!

[Eric]

Is the "plug" that the wires run into, clear? I have the same thing in my truck I think the "wires" are hoses but I'm not sure

[merc123]

Yep. Here's some pics I just took.

[Eric]

Same thing as mine. I've always wondered what it was

[03_Turbo7.3]

just my thought here...

turn the truck to the on position, put your heater controls to face ..then cycle it to max ac it appears thats an actuator ( thats a vacuum line going into it ) and it looks like thats an outside air vent and it almost looks like it has a door on it.. could control outside air coming into the truck..

i dont feel like ripping mine apart lol i just went outside and seen it has a plastic panel under there haha

lemmie know the results..