89 k1500 missing sensors?

[Johny Sticks]

Hey guys , just boughtva k1500 89. I love it so far, and withva little tlc she'll be a real dime piece. While I was looking over the engine bay for any possible vaccum leaks, dumb mods from the previous owner etc. I noticed quite a few bots of wiring pigtails that had just been, unplugged. They seemingly go to nothing and are just hanging. Like these 2. Any idea what these are? Engine is a tbi 5.7

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[magimerlin]

That rounder one near the bottom is for the knock sensor..

sent from what use to be a great country...

 

[black90sport]

the top 2 are for air conditioning.

 

[someotherguy]

In case there's any question I'll "me too it" - top ones are the A/C compressor clutch and the high pressure switch. Lower one is knock sensor.

Richard