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Your question is not completely clear, but I suspect you want to know the purpose of a fuse for your side mirror. Depending on the features of your side mirror system, there could be two reasons for it's use. 1. If the mirrors are electrically adjusted, the fuse could be to protect the wiring system from a short in the activator motors at each mirror. 2. Also, some side mirrors are equipped with a heating element to prevent the buildup of frozen water during freezing conditions. There may be other reasons, but I can't think of any right now. Hope this helps, Johnny

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18y ago

What else can I help you with?