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As we are learning, not all 12 volt frontmount ignition coils are as robust as we'd like 'em to be. Reports of 3 bad coils in a row have been made. I know of only 1 frontmount 12 volt coil manufacturer, so I don't think who you buy the coil from, its still the same weak 'un. The need for a resistor with the 12 volt frontmount coil is to limit current thru the primary and its subsiquent effect on heating the insulative tar which ends up melting and allowing the primary turn to short out. We measure the current flow by using the reciprocitity effect of "Ohms Law" with a voltmeter. Volt meters are much more accurate and eazier to use than inline amp meters measuring current. One thing that might be worth while trying is to open up the ignition points gap from 0.015 to say 0.020. this will cut down the amount of time that the current flows thru the primary and conconurently reduce the over heating effect. If'n you do try wider points gap, check and make certain that the points do indeed close and open by manually turning the distributor cam and visusally watching all the action. This wider points gap will reduce your magnetic field that generates the sparkies in the secondary. So you may have high rpm misses, I don't think it will effect starting sparkies. This is something I have not personally tried because I have a sidemount 6 volt 8N, but it is a speculation..... ..Dell
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