Join Date: Mar 2002
Location: Austin, TX, USA
A good approach to this is to snip the resistor wire 3 or 4 inches from the fireall connector. Then crimp on a butt splice. On the other side of the splice crimp the resistor wire and copper wire in paralell. On the ignition end of things, install a female bullet connector on each wire. Then you will have both a resistance wire and solid wire for either ignition system without the need for a ballast resistor. Just install a male bullet connector on the coil wire and plug it into the appropriate source.
It is a good idea to pack the butt splice with dialectric grease and put a long piece of heat shrink tubing around it to protect it from water and dirt. I like to use uninsulated butt splices for this since they aren't as bulky and get covered with heat string anyway.
I can tell you that attempting to reuse the old connector pin by removing the wire and recrimping or solding a copper wire doesn't work well. It is difficult or impossible to obtain enough metal on the connector to crip a new wire to. And solder just don't stick to those old brass terminals. It's better to cut and crimp a short distance from the firewall connector. Those few inches of wire will provide minimal resistance.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI