To find it, you'll need to consult a wiring diagram specific to your vehicle. These diagrams show the exact routing of the wires. You can usually find these diagrams:
* Online: Websites like GM's owner's site (if available), auto parts store websites (like Advance Auto Parts, AutoZone, etc.), or repair manual websites often have them (but may require a paid subscription). Be sure to use the correct year, make, and model.
* Repair Manual: A Haynes or Chilton repair manual for your specific vehicle will have detailed wiring diagrams.
* GM Dealership: A GM dealership service department can provide you with the correct wiring diagram, although this may cost a fee.
General Guidance (but not guaranteed for your vehicle):
The rear defroster wire is usually found within the rear window itself, embedded between the layers of glass. The wires typically connect to a connector somewhere in the rear of the vehicle, often near the rear hatch or trunk area. However, the exact location of this connector will vary greatly.
Warning: Working with car electrical systems can be dangerous. If you're not comfortable with automotive electrical work, it's best to consult a qualified mechanic. Incorrectly working with the wiring could damage your vehicle's electrical system or even cause a fire.
