I just did this in my 63 it's not to hard, remove the engine harness and untape. Carefully remove the resistor wire from the plug that goes into the firewall, it will have a pink wire on the other end connected by a ring terminal these went to the starter and other end of pink wire went to coil.
Very carefully remove the resistor wire from the terminal you will need to reuse the terminal or go here they have the right terminals
http://www.pcsconnectors.com/2973915.aspx
(12 Gauge Packard 6288953 Twin lock terminal - Firewall bulkhead connector terminal)
Replace resistor wire with 12 ga wire resolder firewall terminal to new wire add a 12 gauge Packard 56 series female Terminal 2989877 to the other end
red wire is power to my remote hei coil.
pink wire and resistor wire that go away purple goes to start terminal on solenoid
frayed looking wire is resistor it is not shown on the wiring diagram
Very carefully remove the resistor wire from the terminal you will need to reuse the terminal or go here they have the right terminals
http://www.pcsconnectors.com/2973915.aspx
(12 Gauge Packard 6288953 Twin lock terminal - Firewall bulkhead connector terminal)
Replace resistor wire with 12 ga wire resolder firewall terminal to new wire add a 12 gauge Packard 56 series female Terminal 2989877 to the other end
red wire is power to my remote hei coil.

pink wire and resistor wire that go away purple goes to start terminal on solenoid

frayed looking wire is resistor it is not shown on the wiring diagram
