Sensor Plug On Bottom Of Radiator, Please Help

[bomber00]

hey I currently bought another radiator but it hasn't got the little plug down the bottom corner, is this going to be an issue? what will it do if its not plugged in? I haven't got air con connected if its for that, I just don't want to go starting it if its going to cause more problems.

any help will be greatly appreciated.

[jiffo]

Won't be a problem.

That sensor works the engine's over-temp thermo fan when the aircon is activated, has no other input to anything.

[Got a Pulsar]

Yeah, thermo fan kicks in when Radiator gets overly warm, not just for aircon.