Put the tester on this afternoon once the battery was fully charged, and connected up ( watched youtube video on how to test drain correctly) and 4amps was being pulled. pulled all the fuses one by one. fuse 1 made it drop to 2.5 which is 20a heated rear window, central locking. And fuse 2 also did the same which is 10a interior lighting, clock, radio, diagnostic socket, heater module. pulling both out obviously dropped it to zero. those fuse descriptions are from the haynes manual. any ideas on what to do next, and what is the likely cause for the above?