For the tail lights;If all fuses are good and all bulbs are good and in place,your prob. is either a loose main plug to the rear of the truck,or a bad ground in the tail section.
Check to make sure the main plug is ok. Locate just behind the L. front fender under the driver's door,under the truck.
Check for faulty ground by taping into one of the t. lgts. ground wires. Attach a scrap wire to it and ground it on the frame. If it works ,add a new ground wire. I did this last month myself. Hope it works.
If youare blowing dash illum. fuses it's got to be that the 12v wire for the dash is grounded. Have you installed a new stereo lately?... . There is an illum. wire in the stereo harness.