Lincoln Repair Questions? Ask a Mechanic for Answers ASAP
Hi. The interior fuse panel in your car, the (smart junction box) receives a ground signal from the headlamp switch and then sends power to the headlamps.
There is an internal transistor in the SJB that commonly fails when it gets warm. Replacement of the SJB will fix this. But it is also possible that the ballast in the headlamp is going bad. But if your mechanic wants to verify this to be sure, he should be checking for power on the Brown/Blue wire at the left headlamp when the concern is happening. This would indicate if the sjb is outputting power to the headlamp or not. Do you think this is something your mechanic can check for you?
Thank you for viewing my response on 3/8/2016 at 7:06:52 PM 5 day(s) ago. Respond to Let me know if you have more questions on this or if you have had the SJB checked. And also please rate my service to you. Thank you.