Lights dimming
Senior User
Joined: Sep 2006
Posts: 223
Likes: 0
My 06 xlt screw 5.4 does the same thing. Mostly when turning on/off other things like the heater/defroster(A/C could be the issue)? 130 Amp Alternator should run everything without dimming. I do have the fogs on most of the time. Learned to live with it.
Senior User
Joined: Oct 2005
Posts: 133
Likes: 0
that is a problem that i used to have and next thing you know it started by it self and you can't even turn it off, to turn it off you will have to disconnect the battery, if your truck is still under warranty, bring it back asap, it's an internanl failure, i will look for the part number that they changed.......it took them 2 days to fix mine.
