I purchased a thermostat from you (C00143426) and it is compatable with the fridge freezer which is Hotpoint RFA52P. But, on going to fit this item this has 5 connection point including the earth were as the existing thermostat only has 4 connection points including the earth. I know where the earth goes the other connection are two brown wires in the one connection, two black wires in the one connection and one brown wire in the one connection. The connections on the new thermostat are numbered 3, 4 and 6. The 3 being a double conection. Can you help/advise fitting this thermostat.