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Sometimes ohming between disconeted battery terminals as things are switched on can find a draw but with all of the relays nowadays, not the best. You probably will not see a change in ohms as you turn stuff on because of all of the relays in modern cars.
Neither can amping to check current draw between a battery termial and disconected cable always find it.
Best way I have found is to pull a fuse and check voltage between both of the terminals in fuse box. Battery voltage read and you are on right path. In a 2000 Ranger found a bad radio CD player this way. On 96 Chevy truck found bad warning buzzer this way when was getting slight buzz. Done away with and battery drain quit.
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drew1
wife has 924 turbo
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