Checking the Bentleys shows that when the light switch is on lights, the relay closes and shorts points X and 30. 30 comes direct from the battery and X from the ignition switch. I worked that much out. Now. What the He** does it do? (The word is heck by the way...) Julie Macfarlane '81 8v Scirocco (In restoration) '81 16v Scirocco (Daves Deal Done) '83 Rabid Jackalope GTi (Baby)