Join Date: Feb 1999
Location: Yorktown, In. USA
Headlights Flickering On & Off-High Beam Only
'67 Chevelle. Start car, turn on high beam headlights, good output voltage from alternator (new during buildup), 13.8 to 14 volts constant at idle. After warm up (4 to 5 minutes) the high beams flicker on & off along with the high beam indicator in dash. Measured voltage across battery & at output terminal of alternator during flicker, still good steady 14 volts. Then put lights on low beam, no flicker no matter how long it runs at idle. Turn brights on while still warm & running, it takes about 10 seconds before the lights start to flicker again, back to dim stops the flicker. Running other power accessories or not doesn't seem to affect it, just having the high beams on & warmed up. Any ideas so far??
Thanks for your time......Odie