i own a 2002 impreza and have got a 1.34 amp drain when you disconnect SBFno5 30 amp fuse the clock room 15 amp fuse in the engine bay fuse box and also the alternator multi block the drain drops to 0.03 amps .when you put any of them back in it goes back up to 1.34 has any body got any ideas please?also wot is the SBF no5 fuse for