* Wiring varies by year and model: Even within the G-20 model line, the specific wire colors for stereo installation can change significantly based on the year of manufacture, trim level, and even the specific stereo system installed from the factory.
* Aftermarket modifications: Previous owners might have modified the wiring, making it difficult to rely on standard color codes.
How to Find the Correct Wiring Information:
1. Consult a wiring diagram: Look for a wiring diagram specific to your exact G-20 van year and model. These diagrams are often available in repair manuals or online resources.
2. Use a multimeter: A multimeter can help you identify the specific wires by testing for voltage and ground connections. Be careful when using a multimeter, and refer to instructions for safe operation.
3. Consult an automotive electrician: If you are unsure about the wiring, it's best to consult a qualified automotive electrician. They can identify the correct wires and ensure a safe installation.
Remember: Always disconnect the battery before working on your car's electrical system.
