Here’s a very informative video by Justin in California, where he tracks down the root cause of an excessive parasitic drain on a 2019 Dodge Ram 2500 Big Horn. First, he lays out the customer’s complaint and the details related to it. He then reviews the circuit operation for these vehicles. Then, he walks us through his diagnostic strategy in a step by step manner, including what he did to quantify the nature of the drain, how it was behaving and how those details led him down the diagnostic path.
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