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headlights and dash dial lights have a very slight flicker on 2004 Honda Civic

the flicker is in a pattern of once every two seconds.and they do not do it all the time.

Asked by for the 2004 Honda Civic
have the alternator voltage checked while this is happening

Roy
1 more answer
Normal on a lot of them because they have what they call an ELD (electronic load detector) in the fuse box. As stated to be safe , have the alternator tested. Alternator output and function/command can also be monitored using the right scan tool, that way you'll also know if the controls (PCM regulated) are working.