Is there a general ohm figure say, per foot of a plug wire that is in an acceptable range,and a nonacceptable range?
I know the lower the ohm number the better and a high numer means higher resistance. I have a set of AC Delco wires that run 5.0 ohms on the shortest wire to 8.0 on the longest.


Layne... :confused:

For solid, non-resistor wires, those numbers are fine. Most meters aren't too accurate down in the low ohm range to start with. Wiggling the probe leads or pulling them off and using a different spot can change the reading quite a bit sometimes. Plus, at the current your coil puts out, either of those numbers are insignificant as far as voltage drop...

current x resistance = voltage, so even if you have some "super coil" putting out 100mA:

.1A x 5ohms = .5V drop out of ~30,000+V?

.1A X 8ohms = .8V drop out of same.

Even resistor core wires aren't too bad...

.1A x 1500ohms = 150 volts out of ~30,000V

The big key is to move the wire and the connectors around, bend and flex it, and make sure the wire doesn't have a break in the conductor that just happens to be touching.

I thought on suppressor wires the numbers was like 1000 ohms per foot. But that was a while ago I may be wrong. Low resistance wires usually created radio interference.
Milan