do not replace anything yet ! first check the electrical system . disconnect the negative cable , % l6 e% w; s& Lconnect 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 ,$ e8 R' q( i, n6 l9 _
now you know in which that device is draining the battery .