I have a MK supplied Alu Radiator

It has and inlet and an outlet and also a hole to screw something in?

what goes in the hole?

rad fan switch ?

that seems like a reasonable idea, been racking my brains all day trying to think what it might be.

any idea which one MK recommend? saves me a phone call tomorrow.

thanks

i might just have one, for postage?

if you could post tomorrow for saturday delivery I can send you some money via paypal right now.