help with the fusible link wire smoking under the dash as i drive

i do not have a guage, just the junk one in the dash.

can you explain to me how i just do away with the amp guage in the car? but then again, i cut the big black wire under the dash that goes to the stock guage, and i still smell burning wires as i rev the car up, so that alone rules out my ammeter that is in the rallye dash.