What are these plugs for?

[Street Sweeper22]

I pick up a 84 Regal from a salvage yard for $100. I’m in the process of getting it presentable. I have looked and searched through numerous threads so I’m not wasting anybody’s time but I have no luck. I’ve tried checking out the wiring diagrams but the other problem I have is that I’m color blind lol anyway your help is greatly appreciated.

 

[Injectedcutty]

The first one looks like a knock sensor plug. Not sure about the others, but I'm sure someone will chime in.

 

[Street Sweeper22]

The first one looks like a knock sensor plug. Not sure about the others, but I'm sure someone will chime in.

Ok thanks

 

[565bbchevy]

I think these are for the air pump that is probably not there any more

 

[pagrunt]

To me that first one looks like its for the temp switch for the computer.

 

[1bad79]

First one is the knock sensor

 

[Street Sweeper22]

I think these are for the air pump that is probably not there any more
Yeah the air pump is definitely gone.

 

[TURNA]

Second one goes to the flux capacitor harness through the firewall and under the dash.

 

[Street Sweeper22]

To me that first one looks like its for the temp switch for the computer.

It’s either a blue or purple wire.

 

[oldsmobile joe]

first one is knock sensor, I'm guessing the others are air pump.

To me that first one looks like its for the temp switch for the computer.

ecm coolant sensor uses two wire and you didn't have to squeeze it to disconnect it like that one requires.
joe