Chappy, if you have the sunroof module, then this can be a very easy modification. All you would need to do is to add in a diode that ran from the pink wire in the overhead console to the blue/red wire for the switch lights. That would give you maximium dash lighting any time the truck was turned on.
But, if you don't have that, then what you need to do is to open up your glove box and locate the light fixture there. You should see a black wire and a light green/orange wire. You want to tap into the light green/orange wire and run a new wire over to the headlight switch. You will want to tap the other end of this wire to the black/red wire there. From there, you will have full control of the dimmer and any time the truck is turned on, the dash lights are going to be on.
Hope this helps.
