To find the correct wire, you must consult a wiring diagram specific to your truck's year, model, and options. You can find these diagrams in a few ways:
* Repair Manual: A Haynes or Chilton repair manual for your specific vehicle will have detailed wiring diagrams. This is the most reliable method.
* Online Resources: Some websites specialize in automotive repair information and may have wiring diagrams. However, ensure the site's information is reliable and accurate for your exact year and model.
* Dealership: Your local Chevy dealership's parts department might be able to provide a wiring diagram, or at least point you towards a reliable source.
Caution: Working with car wiring requires care. Incorrectly connecting wires can damage your vehicle's electrical system. If you are unsure, it's best to seek help from a qualified mechanic. Using a multimeter to test for voltage can help identify the correct wire when the car is in reverse. Always disconnect the battery's negative terminal before working on the wiring.