Nissan Repair: 01 nissan exterra, nissan exterra, autozone

Question
head lights surge  

Answer
Vinnie,

If the lights are surging/dimming try checking the alternator.  Sounds like a field in the case is blown.  It is a direct current rectified system with three diodes.  When one fails the lights do this strange pulsing thing.  Autozone or Checker will do a free electrical inspection.