I have a problem with my Megane temperature gauge. Sometimes it works fine and other times it goes up to maximum. On occassions, if I switch another electric item on the gauge returns to normal, odd or what? Another problem is that the electrical system that operates the roof fails occasionally but other times works as it should. This occured after I had a small paintwork job done on the bootlid and wonder if the canvas from the roof has been partially removed and re-fitted incorrectly by the garage. Does a diagram exist on how to attach the canvas hood to the metal frame?