do not replace anything yet ! first check the electrical system . disconnect the negative cable , 6 Q8 n& w$ P' O( J1 u1 E" ~7 Jconnect 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 Q+ L: R2 T( m' _& K
now you know in which that device is draining the battery .