12v or 6v coil?

Mike CA · Oct 26, 2009

I'm assuming I have a 6v coil on my distributor. But to be honest, the tractor had no battery when I got it, and the previous owner wasn't even sure what voltage the system was when he last had ran it. He believed it was 6v. But the wiring was a mess, and the battery cables were thin, so it could have very well been 12v. I'm running 12v now, and would like to know what my coil is? I looked at the coil and didn't see any markings. It's just black. So how can a person tell if is 6 or 12?

Bob M · Oct 26, 2009

Mike - If you have a VOM or DMM use it to measure the coil primary resistance:

Disconnect both primary wires then measure across the coil primary terminals. A 6 volt coil will show around 1.6 ohms, give or take a few tenths. A 12 volts coil's resistance will be double that (3.2 ohms or so...)

Mike CA · Oct 26, 2009

I think my neighbor has a multimeter. I'll grab it and give it a go.

Thanks Bob!

12v or 6v coil?

Mike CA

Well-known Member

Bob M

Well-known Member

Mike CA

Well-known Member

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