When you're driving at night or in low visibility conditions, you might notice something unusual: the turn signal indicator comes on with headlights. Is this normal, or does it indicate a problem with your vehicle's electrical system? Understanding the answer is important for your safety, the proper functioning of your vehicle, and compliance with road regulations. In this comprehensive guide, we'll explore why this happens, when it's expected behavior, when it signals a fault, and how modern automotive lighting systems are designed. We'll also provide visual explanations and practical troubleshooting advice to help you address this issue.
