memegtr

the radiator on my GL wagon is done so I`m buying a new one, this older one has this 2 little electronic "sensors" i presume on the side, but I dont know exactly what they are or do. can anybody tell me what they are, so i can buy them new too. 1987 GL wagon EA82 engine with spfi thanx!, where can i download the service manual for my car... that would be very helpful too!! @MemeGtr