do not replace anything yet ! first check the electrical system . disconnect the negative cable , ) w# R9 _' z) L' Z/ O5 Pconnect 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 i8 j& f. H& f! {; W6 unow you know in which that device is draining the battery .