Signals OUT Again!!!!!!!!

Got to hate those kind of car days....I would start first under the dash. Any smoke of any kind is not a good thing. A "wire" short of course. I wouldn't waste any more money trying to fix by replacement of parts until you have traced the works. When my car stopped dead on the road once, I found that I had first shorted out my ignition which toast other wires in the run. Perhaps you problem is the other way. Something in your horn/tail has grounded out and shorted your ingnition run.
Are you now getting anything with the ignition to on only? battery power or Acc.

Kinda late now....when a fuse blows (often)...somethings not quite right