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Message: <blockquote data-quote="helotaxi" data-source="post: 2984522" data-attributes="member: 550915">The Car Stereo Cookbook has some good info, but it has a lot of wrong info as well.  The problem with books like that is that the typical audience for the book takes everything as gospel because they can't see through the myths that are quite prevalent in that book.  If the value of the connection resistance is as high as proported in that book, each one of them would be causing a 1-3V drop under a 100A draw.  No one would have a stable voltage.  That clearly isn't the case and as such it is safe to assume that the book is wrong.You NEED a fuse next to the battery on the main power wire.  A run of 4 ga and a run of 8ga have more combined resistance than the single run of 1/0.  Even if you were to only run 4 ga to the distro, you'd probably be fine.</blockquote>

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