Fog lights not working anymore

[johnnytree]

I just noticed that my fog lights are not working anymore.
They were fine up till the head gaskets were replaced.
I would hate to take the truck back to the dealer for that.
If it is just a connection that I can do. Fuses are good, I have fog light indication when I pull out the switch and the connectors are good at the lights themselves.
Thanks for any help.