How do you remove wires from fire wall junction correctly?

scottylack,
I see you have a 1964 car. Take particular care to inspect the 2 thick wires that carry the ALT and BATT currents. If their housing spots show signs of melting plastic, many people drill thru and install a continuous wire. The 1963 and 1965 bulkheads had separate thick "bus bars" to pass those currents. Our 1964's were neglected, which is why I just bought a 65 bulkhead to upgrade mine (must cut opening 1/4" more). 1966+ were like 1964 (w/ 3rd wiper connector), so they also have the ubiquitous "bulkhead melt" problem.