One problem related to alternator/generator/regulator has been reported for the 2004 Honda Accord. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Honda Accord based on all problems reported for the 2004 Accord.
The headlights on my 2004 Honda Accord go dimmer and brighter about every minute while driving or parked. This headlight problem only occurs when the a/c or defrost is on. I believe the extra load on the electrical system with these components turned on is causing the headlights to dim about every 60 seconds. It could be related to a fan or other engine component turning on and off, not sure. The dealer replaced my battery and checked the alternator but the problem still occurs. The dealer says it is normal for Honda Accords to do this, but I think there should be a recall. This is very distracting to myself and the drivers in front of me. It looks like I am flashing my lights.