Solving Electrical Problems: Check the Integrity of the Connections

When an electrical failure involves multiple circuits, two important steps should be taken. If the vehicle involved is of a recent production date, the first step should involve researching factory service bulletins for campaigns or field fixes. The second step should involve reviewing a wiring diagram to determine if the failed accessories or components share any power feed or ground circuits. These steps can reduce the diagnostic time and pinpoint a problem early in the diagnosis…

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