To answer your question you need to know that they make several differant types of coils. If you have a 12v coil that has the resistor built into the coil can from extra wire windings then NO you do not need a external resistor. But on the other hand if your coil does not have a built in resistor then you have to have a external resistor in the wire going to the coil in a 12v system.
Look at your coil. See if you can still read the writing on the side of the can. It should say if a resistor is needed or not. May say one of the following........ 12v no external resistor required 12v external resistor required
As mentioned by another poster NAPA sells a 12v coil that can be wired straight to 12v's. The resistor is built into the can. Local store sells them for $16.99. For this amount of money I would just buy it for the piece of mind of knowing I have the correct part installed.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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