95 s10 blazer no dash lights HELP

Hi I'm new to this Sooooo. I have a 95 blazer and the dash lights are out, but the headlights and taillights work. Everytime I turn on the head lights it blows the 20amp fuse. I rewired the trailor wires since this occured once before, but to no avail it did not work. If you have any ideas it would be much apprecited. Scott

You have a short on the circuit that blows the fuse. Get a wiring diagram and follow each wire the best you can.