Question about 2004 Lincoln Navigator
If you have the HID bulbs check with an Autoparts store like Autozone. I believe the right and left headlights have separate Relays in the Powerbox. It is possible that there are 2 low beam and 2 high beam relays total. They pull too much power for both sides to be wired together and may wire the high beams separate too!
Posted on Feb 09, 2011
I found this problem on my 2004 Aviator! Page 241 in owners manual, Auxiliary relay box, under speed control on right passenger side inner fender, 1 and 2 for right or left low beam HID, I switched them around and transferred problem to opposite side. On the way to the parts store now. Weird thing was, it showed 12vdc at connecter when not under load so don't believe your voltmeter.
Posted on Mar 17, 2015
The consensus seems to be that usually the problem is with the ballast. The general diagnostic routine is 1. Check the fuses. There is actually one fuse for each side. 2. Check the bulb by switching sides with them. 3. Check the ballast by switching sides with them. 4. If you've gotten this far, you're probably unlucky enough that your problem is in the wiring harness.
Posted on Mar 09, 2015
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Posted on Jan 02, 2017
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