1. Peugeot Official Website: Visit the Peugeot official website and search for the specific model and year of your 306 HDi. Some manufacturers provide wiring diagrams as downloadable PDFs in the resources or support section.
2. Online Forums and Communities: There are many automotive forums and communities dedicated to Peugeot vehicles where enthusiasts share knowledge and resources. Search for Peugeot forums and look for threads related to electrical diagrams or window wiring.
3. Auto Repair Manuals: Purchase an auto repair manual specifically for your Peugeot 306 HDi. These manuals often include wiring diagrams and circuit descriptions.
4. Online Auto Parts Stores: Some auto parts stores offer online access to technical resources and documentation. Check websites like Autozone, Advance Auto Parts, or specific Peugeot parts suppliers to see if they provide wiring diagrams.
5. Haynes Repair Manuals: Haynes is known for producing car repair manuals, including some for Peugeot models. Their manuals typically include wiring diagrams and step-by-step repair instructions.
6. Peugeot Service Centers: If you have access to a local Peugeot service center or dealership, they might be able to provide you with wiring diagrams or technical documentation.
Remember to verify the accuracy of any diagrams or information obtained from external sources, and it's always a good idea to consult a professional automotive electrician if you're not confident in working with electrical systems.