do not replace anything yet ! first check the electrical system . disconnect the negative cable , % e! V( Q( u; C) M, Iconnect 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 , 0 j5 _9 `$ R1 _% _. vnow you know in which that device is draining the battery .