Classic/Antique Car Repair: coil resistor wire, starter solenoid, battery voltage

Question
I replaced part of the wiring harness on a 72 Corvette. The yellow wire from the starter solenoid to the coil should be a resistor wire. How do I tell if it is or not.I checked the ohms - 2. I also checked other misc. wire in my shop and the ohms is 2 also. I checked the old resistor wire from the old harness,It's 2 also.The old wire has a special sheath around the wire. The new one doesn't.Hope you can help me.  Thanks.

Answer
The wire from the solenoid to the coil should not be a resistor wire. That brings full voltage to the ignition coil for starting when the battery voltage drops because of the heavy load of the starter. The resistor wire should be the one from the ignition switch to the coil. This drops the voltage when the car is running and the alternator is charging. The running voltage to the coil is around 7 volts. The wire from the key to the coil is a ni-cad and changes resistance with heat.
Brad