Bought a used S2000 and the A/C isn't working. Investigating the engine bay and found this loose plug

Anyone know what this is for?

 

If this has nothing to do with the A/C where should i look next?
The dash button lights up when I turn it on but the air is not cold at all.

 

Get it re gassed?

 

You mean re-charged?

 

That's a horn connector.

The system likely has a leak and lost it's charge. Check the connector on the back of the compressor, and any connectors going to the AC lines.

 

No I mean re gassed

 

It's not a battery

 

check the wires and connector going into the condenser can thing in the front of the car.. pretty random but this was a problem i had before i think a sharp rock cut it or something

 

Now I realize the horn is missing.

Anyone know where to look to get my A/C recharged?

 

Any repair shop that does AC work can recharge it for you. You could also buy the refrigerant and hose/gauge to recharge it from the parts store. If you recharge it and find that the AC works again (even if only until the gas leaks out) then you know the problem is a leak in the system somewhere and not something mechanical.