So I have a 1986 k10 a/c truck.  I have swapped to the LED bulbs in the dash, and removed the factory oil pressure, water temp, and clock.  In their place there is a mechanical oil(454 fires off at 70psi), mechanical water temp where the clock was, and AEM af/r gauge.  I kept the factory voltmeter.  everything worked for two weeks and now today it instantly pops the fuse for the cluster lights. 
i did damage the circuit board to fit connector through, so i believe that it my culprit, is there a way to remove circuits to close them off so they don't short out, while keeping the lights useable?   
also who have you used for a new printed circuit?