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Easy test disconnect Neg batt cable & connect a test light in between the two or a 12 volt bulb, if it lights you have a drain. Note Make sure every thing is turned off, & door closed.Then start pulling fuses until you find the source. If nothing shows up unplug ALT as diodes will not show up under most testers.Ps soft short If a dome light uses 10 amps per hour and you have a450 amp Batt after about 30 hrs your dead
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