Re: MISSFIRE WHEN WARMED UP

Posted by HH56 On 2009/6/13 22:12:50

All the universal coils I've seen are not polarity sensitive like a solid state component but you do have to specify voltage when buying. You then wire according to needs because terminals come marked either with the plus & minus such as this one or a red dot on the positive side. Some of the older OEM coils had one terminal labeled -- usually IGN or SWitch. Assuming it was installed in the specified car, polarity was assumed to be correct with that kind of label.

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