do not replace anything yet ! first check the electrical system . disconnect the negative cable ,) s8 F2 _( g& ?1 H p! Z
connect 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 , 2 h9 { r7 }! Z' s4 i$ r, \now you know in which that device is draining the battery .