well before everyone tells me it the switch i already swapped that and its not it. no sevice light and no lights at all on the switch.

 

check your connections on the switch, connections on the t-case, and fuses

 

does anyone know if there is a 4wd fuse or just the relay?

 

I would think that even though you have a relay, you have to have a fuse to power that relay. I would look in your owners manual. They might be listed in the fuse box(in truck) or in the main distribution box as well(under hood). Vince

 

the fuse is fine has power any one else have any idea i need a wiring diagram for the switch.