How do you test a 6 volt coil

[Guest 40-41 connies]

I have a couple of 6 volt coils that I would like to find out if they are o.k for use. They have the two screw posts with plus and minus marks.

Is there any way to test the coils on a bench.

Thanks

[Mark Shaw]

I found this via Google...

The common check for a bad coil is to "replace with a known good unit" in all of the better service manuals. Not very practical when stuck on the side of the road or when you do not have a "know good coil" handy. A second method is, with the ignition off, use the ohm meter to check the resistance across the coil terminals. Connect one probe to each of the terminals and read the resistance. On a 12V coil, you should read between 3.1 and 3.5 ohms resistance. On a 6V coil, you should read between 1.43 and 1.58 ohms resistance. If you read zero resistance, you have a short in the coil and it is not functioning. If you read infinite resistance, there is a break in the windings and the coil is not functioning. Replace with a known good unit. If the coil tests good, continue checking out the system.