do not replace anything yet ! first check the electrical system . disconnect the negative cable , 8 \( v4 J3 A7 k% k. e% Vconnect 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 , 6 j E" S4 N6 Snow you know in which that device is draining the battery .