do not replace anything yet ! first check the electrical system . disconnect the negative cable ,* w- i2 x4 E& S' @$ }
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 D! M9 a2 m! I1 k7 F c, y6 u% }2 c
now you know in which that device is draining the battery .