I have a 2001 Ford F150 Super Crew with 4.6 and lately when I am riding down the road I have been having problems with my headlights. When I turn on my headlights on sometimes one will be dimmer than the other and after I pull lever back for brights sometimes it will brighten back up.
This morning I had my headlights go out completely and the Bright light indicator came on for about 10 seconds, then the indicator went out and the lights came back on. This entire time I just had my normal low beams on. Any idea what this is?
Also, my battery has been sluggish like something is draining it.

 

Sounds like a bad ground

 

Any idea how to find and fix?

 

Just follow the ground wires also.Check the connection s Check to c if water got in your fuse box I've heard of the windshield leaking and letting water get into the fuse box

 

Ok...thanks guys

 

If anyone has any more suggestions please let me know...thanks