The heated driver's seat in my 1989 9000i doesn't work although the passenger seat does. Looking under the driver's seat from behind there is a multi plug plugged into the right hand side of some sort of aluminium panel, and there is a blue wire coming out of the back of the plug that is not connected to anything. There also seems to be another socket on the left of the aluminium panel with nothing plugged into it. In addition to this, there are four other multi plugs not connected to anything. Three are labelled: VF, RF and HB (could be RB) and the fourth one has nothing written on it. Based on that information, does anyone have any idea why the heater doesn't work and how I can fix it? It's getting cold here in Scotland so any help would be gratefully received!!!