do not replace anything yet ! first check the electrical system . disconnect the negative cable , 3 @; W9 O, m$ @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 ,7 X5 E0 {: j- A, r) D: Z
now you know in which that device is draining the battery .