1. Preparation:
* Disconnect the negative battery terminal: This is crucial to prevent accidental shorts and electrical damage.
* Gather tools: You'll likely need trim removal tools (plastic pry tools are ideal to avoid scratching), a socket set (possibly a 10mm), and possibly a Phillips head screwdriver.
2. Removing Interior Trim:
* Rear Quarter Panel Trim: Start by carefully removing the plastic trim panel covering the rear quarter panel on the driver's side. This often involves prying gently at the edges with your trim tools. Look for clips and push-in fasteners; start at the bottom and work your way up. The trim may be held on with several clips. Be gentle to avoid breaking them.
* Side Panel Trim (Possible): Depending on the location of the wiring harness connection, you may also need to remove some of the side panel trim behind the rear seats or along the side of the cargo area. Again, use your trim tools carefully.
3. Locating the Trailer Wiring Harness:
* Once the trim is removed, carefully inspect the area for the trailer wiring harness connector. It might be tucked away behind other wiring or components. The connector might be a standard 7-pin or a 4-pin connector.
4. Accessing the Connection:
* Once located, you might just need to disconnect the connector to access it. If there is a cover protecting the connector, carefully remove that as well.
5. Reassembly:
* After accessing the connector, carefully reverse the removal process to put the interior trim pieces back in place. Ensure all clips are securely fastened.
* Reconnect the negative battery terminal.
Important Considerations:
* Wiring Diagrams: A wiring diagram specific to your 2003 Honda CR-V would be extremely helpful. You can often find these online through repair manuals or Honda forums.
* Professional Help: If you're uncomfortable working on your vehicle's electrical system, consider taking it to a qualified mechanic. Improper wiring can lead to electrical issues or even a fire.
* Take Pictures: Before you start removing anything, take pictures. This will help you remember how everything goes back together.
This process is a general guideline. The specific steps may vary slightly depending on your vehicle's exact configuration. Always prioritize safety and proceed with caution. If you encounter any difficulty, don't hesitate to seek professional assistance.
