What’s this plug for?

[Cochise]

While I was installing the battery relocation box, I found this plug just hanging out.

Looks like it’s been hanging out for a while, any idea what this might go to?

 

[94IndyPace]

While I was installing the battery relocation box, I found this plug just hanging out.

Looks like it’s been hanging out for a while, any idea what this might go to?

A/C clutch?

 

[96blak54]

kind of looks like an injector plug....missing its inside seal.

 

[dalpoas83]

what are the wire colors? Kind of hard to tell in the pics if that is light blue and can’t tell if there’s a stripe on the backside. Also year of car

 

[RAU03MACH]

Coolant resavor sencor plug

 

[RAU03MACH]

If it is 96 up

 

[Cochise]

Coolant resavor sencor plug

Yup… this was it!

Thanks everyone for your input!