This is so not true. I have kept my mouth shut until now. Here comes the cold hard truth. Yes, its usually the ignition side that gives trouble. No, its not because of heat build up from the lighting windings. The ignition and lighting have NO electrical connection to one another. The stator does not give a shit if you use the power its making or not, and doesnt create heat either way.. The stator does get hot, but do you know why? Only because its bolted to the side of the engine.
Stators fail because of one reason. They internally short themselves out. The wire used is coated with an enamel type coating. This insulates the wire . Thicker gauge wire ( like used on the lighting) will have a thicker enamel coating, making it less likely to short. The ignition side uses a very small, hair like wire. The enamel insulation is rather thin. Most aftermarket stators fail because they are wound with the cheapest wire on earth. As with ANYTHING the quality of materials used what makes something good or bad..
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