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Disconnect the negative battery cable from the battery.
Connect one end of the test light to the negative terminal of the battery, and the other end of the test light to the end of the negative battery cable, so that the light is now "inserted" into the circuit between the cable and the battery.
Check the intensity of the test light. A faint glow is normal and indicative of the small current used to power the car's computer and clock. A bright glow means you have a significant battery drain that needs to be repaired.
Leave the test light in place, and begin to remove fuses one at a time from the fuse panel. Check the test light after you remove each one. If the light is on, replace the fuse and move on to the next one.
Pinpoint the circuit that is causing the battery drain when you pull a fuse and the test light goes out.
you can insert you meter instead of the test light, using dc volts 20 setting.
read the voltage as you pull fuses
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