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Old 10-18-2011, 09:16 AM   #8
RonC
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Join Date: May 2010
Location: Rhode Island
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Default Re: 12 volt or 6 volt coil how to tell difference

12 volt coils are actually 6 volt coils with a resister connected in series within the primary circuit usually internal to the coil. That fact allows you to check the ohms across the primary terminals to see what the resistance is of the coil. As mentioned above a 6 volt coil should have less than 2 ohms and a 12 volt coil will have more closer to 2.5 to 3 ohms of resistance
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