69 Z10 Ignition problem/ electrical?

[Jeremy]

Not quite a Super Car but I have found this site best for more technical questions. I have a 69 Z10 with a 300 Hp 350, The last time I drove the car I noticed it was running a little ruff, I thought it needed new points. Changed the points and did not fix the problem. While I was working on the car I noticed the cotton braided wire to the coil was hot to the point it was starting to smoke. I am guessing this to be the resistor wire? I pulled the block loose from the fire wall and cut the loom open and found no short or damaged wire. I seperated the fuse block from the inside of the car and found no damaged or pinched wires. the wire is only getting hot in the engine compartment side of the fire wall, not inside the car. Could this resistor wire be breaking down causing resistance within the wire itself? I ordered a new engine harness thinking the resistor wire might be bad? I did change coils also but no difference.

thanks for any help or suggestions guys.