do not replace anything yet ! first check the electrical system . disconnect the negative cable , : I, X/ r! U l* ^; z5 f3 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 , 8 b1 ~! n' w% X+ p: f2 E) f! ?now you know in which that device is draining the battery .