I have owned a 1992 V12 XJS Convertible for more than 25 years. It has had the usual minor issues with the electrical system which I could always fix. Lately it has a problem that has me stumped: the LH window and the LH quarter window do not work any more. The right hand windows are fine. Looking through the service manual and other documentation I just can't find fuses for the electrical windows which hopefully would help me pin down the problem. I can't imagine that the windows operate without any circuit protection. Does anybody know if there are fuses or circuit brakers which protect the windows circuits? Where else could I look?