UK Car Repair: Vauxhall Astra Mk 4 2003 Heating System, vauxhall astra, mk 4

Question
The Entire heating system in my Astra has packed up. No Heater Blower, Air Con, Rear window De-mister, or anti pollen thing either. At first they were all cutting out then coming back. But no response at all now. There is a wire hanging loose in front of the radiator. Looks like it should be connected to something but can't see what. Any ideas?

Answer
What colour is the hanging wire? I doubt though that this is the problem.  It sounds like a bad connection that has suddenly burnt up. You need to troubleshoot the power sources for this system starting with the fuses.  If they are ok find the relay and swap it with another identical one in the car.