do not replace anything yet ! first check the electrical system . disconnect the negative cable , $ D, V6 O2 V2 I8 D* sconnect a test light between cable and battery post . if the test light lights up bright , there could be a short circuit somewhere . pull out each fuse to see until the test light goes dim , - k2 V8 H4 l( E0 tnow you know in which that device is draining the battery .