HELP!!! I have a 2001 Ford F-150 sport. My problem with it is that the rear tail lights don't come on when I turn on the headlights but, when I push on the brakes and use the flashers, they come on just fine. Also, all the cluster lighting is off. I checked all the fuses and they are all fine. Please, somebody, help me!!!! I don't know what else to check...

 

I would start with a ohm check of the light switch at the switch and at the taillight plug.