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<blockquote data-quote="Savant" data-source="post: 159630" data-attributes="member: 546108">Keep in mind that there are also control wires that go to an alternator (some anyway, if you have an external regulator or if you car&#039;s computer runs the field voltage).. You control how much power the alt puts out by increasing/decreasing that voltage.. The new alt may have a different regulator (or one that isn&#039;t as good as the stock alt?).. and at lower idle it&#039;s not increasing the field voltage enough? or the computer is doing something odd? or just the fact that it&#039;s a bigger alt and might require more speed to generate current with the bigger windings, etc..In any event, as long as you are getting the power you need -for the most part-, you should be ok..You should try to find out if you need a ground wire or not.. you might be grounded through the case/bolt/block.. If there is a true ground wire, you probably should match it to the power wire..</blockquote>

[QUOTE="Savant, post: 159630, member: 546108"] Keep in mind that there are also control wires that go to an alternator (some anyway, if you have an external regulator or if you car's computer runs the field voltage).. You control how much power the alt puts out by increasing/decreasing that voltage.. The new alt may have a different regulator (or one that isn't as good as the stock alt?).. and at lower idle it's not increasing the field voltage enough? or the computer is doing something odd? or just the fact that it's a bigger alt and might require more speed to generate current with the bigger windings, etc.. In any event, as long as you are getting the power you need -for the most part-, you should be ok.. You should try to find out if you need a ground wire or not.. you might be grounded through the case/bolt/block.. If there is a true ground wire, you probably should match it to the power wire.. [/QUOTE]

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