Electrical draw

[stejohn43]

I have a 2005 Ram 2500 with a 5.9 diesel. I have been dealing with a dead battery issue over the past month. Started when I noticed my heater fan was staying on after my key was turned off. My ignition switch was very sloppy. Replaced the ignition switch and found a cracked negative cable, replaced that. Replaced both batterie. Battery goes dead still after 3-4 days. Help"…….

 

[Dan J]

Do an amp draw test as outlined below...basically you disconnect the negative battery cable from the battery, then connect a multi-meter between the negative battery post and the negative cable itself and set your meter to read amps, meter should show amp reading...note meter reading. Now pull fuses one at a time until the amp reading goes to or close to zero. That will at least get you to the circuit casing the draw.

Testing for Parasitic Draw with a Multimeter | Test Meter Pro

As long as you have a multimeter and a bit of savvy, you don’t need to be a professional to check for parasitic draw. See this basic step by step process...

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