Thats a different one, its called an Engine Saver and is a low coolant alarm.I think benno28 has his mounted in a hose joiner on the top radiator hose. That's on his 2.8. I would say that's the best place as it reads any loss of water going into the motor.
Quite possible. i just remember seeing it when i was looking under his bonnet. i thought it was the engine watchdog. and yes it does have an alarm.Thats a different one, its called an Engine Saver and is a low coolant alarm.