head lights

You can upgrade the whole system using this link as a guide. Measure voltage at the battery and the headlamp connector. The voltages should be close to each other and should not fluctuate very much with engine running. What is the year make and model? Any modifications to the lighting system including but not limited to different headlamps? Big stereo causing headlamp to wink in sync with a bass hit?


http://www.allpar.com/fix/electrical/headlights/index.php