do not replace anything yet ! first check the electrical system . disconnect the negative cable , * M8 @0 p" f. Z2 X: ]7 N Fconnect 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 , H9 J- W6 E" Y# q) J" X$ O) Bnow you know in which that device is draining the battery .