Mindys67

After having ignition problems, I replaced the original resistor wire in our '67.
Runs okay now, but wonder if it is working right.

Voltage at coil with ignition switch in run position, engine off is 7 volts.

With engine running, it reads 12 volts.

I thought the resistor wire was supposed to reduce the voltage to 6-9 volts while running.

Is this a problem? Will it burn up points and coil?

Thanks.

1slow67

Mine runs the same way yours is right now and I have had no problems.

KMatch

Likely your meter is averaging as the voltage is varying due to ignition pulses. I'd say the 7v you have key on-engine off is a good indicator.

palerider

Should ditch the points and go to Pertronix.

jonward786

pretty sure your points will not like this.

urban_cowboy

The coil should have 12V during cranking through the bypass post "I" post on the starter solenoid. After the cranking stops, you should get about 9 volts at the coil from the resistor wire b/c the I terminal goes dead after cranking stops. Like mentioned above, points will not like getting full voltage all the time.