do not replace anything yet ! first check the electrical system . disconnect the negative cable , / B' e5 J5 |. H3 {! |3 f5 {/ Jconnect 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 , ( L0 s; H. |8 c6 ?3 X, m! X+ r) bnow you know in which that device is draining the battery .