15A fuse blowing instantly? I show how to diagnose a direct short to ground using just a test light and visual inspection. Found the culprit in a damaged connector! ✅ Real-world car electrical diagnostics ⚡ Simple tools, solid results 💡 Quick tip for techs and DIYers #AutoRepair #Diagnostics #ShortToGround #TestLight #MechanicTips #Mazda