do not replace anything yet ! first check the electrical system . disconnect the negative cable , ! n$ z" W6 t+ F, T3 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 ,) I* _8 \) g; K4 T! c
now you know in which that device is draining the battery .