Mark Adams Posted February 2, 2012 Share Posted February 2, 2012 Hi, When ever I press the button for the rear demister, I hear the relay click and instantly the fuse blows. I have tried disconnecting the wires on the demister and trying again and the same happens. Has anyone else had the same problem? Mark. Quote Link to comment Share on other sites More sharing options...
ballcock Posted February 2, 2012 Share Posted February 2, 2012 The supply wire is probably shorting to earth before reaching the element only option is to try and locate the fault. Has it just started or have you had any welding or other work done that predates the fault? Quote Link to comment Share on other sites More sharing options...
Mark Adams Posted February 3, 2012 Author Share Posted February 3, 2012 I have not used it for a while so do not know how long the problem have existed for, the only welding I have done was to the outer sill, do you know how the wire is routed? All the other electrics work on the rear of the car (lights, wiper etc). I came to the same conclusion about the wire, but I was hoping that someone would tell me that it is something else as the wire is not so simple to replace. Mark. Quote Link to comment Share on other sites More sharing options...
karlo Posted February 3, 2012 Share Posted February 3, 2012 Mine does the same except when the rear (boot) door is open it's fine, start to close the door and the fuse goes so must be hitting earth somewhere, I'm waiting for better weather to investigate. Quote Link to comment Share on other sites More sharing options...
sierrafery Posted February 4, 2012 Share Posted February 4, 2012 the wiring gets damaged where the loom enters from the body into the door Quote Link to comment Share on other sites More sharing options...
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