u/YogurtclosetPrior910

I have a 1993 Ford F-150 5.0 V8. I have no idea what the three canisters circled in the image are or what they do. As you can see in the picture the one on the bottom has a hose coming off of it to the left that just gets cut off and is open ended. The one in the middle has a red wire that feeds to the top of the engine and a black wire that was supposed to feed somewhere but is cut off about at about a foot. I have also attached a picture of the top of my engine where that black wire maybe was supposed to go. Any ideas?