do not replace anything yet ! first check the electrical system . disconnect the negative cable , ; D) F& h1 f) R9 Y4 N$ tconnect 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 ,* h6 O* n8 u+ z. r% E5 u- c
now you know in which that device is draining the battery .