Where can you find a diagram showing how the charging system works for 4.0L V6 engine?

You won't find *one* universal diagram for a 4.0L V6 charging system. The specifics depend entirely on the *make* and *model* of the vehicle. The charging system's components and their wiring will differ significantly between manufacturers (Ford, GM, Toyota, etc.) and even between different model years of the same vehicle.

To find a diagram, you need to specify the make, model, and year of the vehicle with the 4.0L V6 engine.

Once you have that information, you can try these resources:

* Your vehicle's owner's manual: This is the best place to start. While it may not have a detailed wiring diagram, it might show a simplified schematic.

* Online repair manuals: Sites like Haynes, Chilton, or AllDataDIY often have detailed wiring diagrams and repair information for specific vehicle models. These are usually subscription-based.

* Your vehicle's service manual: This is a more comprehensive manual typically used by mechanics. Accessing one may require a visit to a dealership or a specialized online resource.

* Online forums dedicated to your vehicle's make and model: Enthusiast forums are a good place to ask for help locating a diagram, though the accuracy of user-provided information should always be verified.

Without the specific vehicle information, any diagram I could provide would be unreliable and potentially dangerous to use for actual repairs.