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External voltage regulator
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<blockquote data-quote="Dafaseles" data-source="post: 8790026" data-attributes="member: 681482"><p>So does mine. It's a 2011 Silverado. </p><p>So, when I bought this alt, I spoke to Tony at mechman. GM hasn't changed its alternator mounting since something like 1986. So any year alternator will fit (I think it's just the V8's though). My truck, having a regulated voltage controller, (stock, uses a 2 pin harness to connect to the truck) I can use an alternator for an older module truck with the 4 pin connector. I just had to connect the exciter wire to a 12v switched source. They also have a sort of 2 pin bypass module. I plug that into the stock 2 pin harness, and it fools the truck into thinking it's still in control of the voltage. No battery light and it works perfectly. So I was fortunate in that aspect. Being in California, if I have a battery light on the dash, it'll fail smog.</p></blockquote><p></p>
[QUOTE="Dafaseles, post: 8790026, member: 681482"] So does mine. It's a 2011 Silverado. So, when I bought this alt, I spoke to Tony at mechman. GM hasn't changed its alternator mounting since something like 1986. So any year alternator will fit (I think it's just the V8's though). My truck, having a regulated voltage controller, (stock, uses a 2 pin harness to connect to the truck) I can use an alternator for an older module truck with the 4 pin connector. I just had to connect the exciter wire to a 12v switched source. They also have a sort of 2 pin bypass module. I plug that into the stock 2 pin harness, and it fools the truck into thinking it's still in control of the voltage. No battery light and it works perfectly. So I was fortunate in that aspect. Being in California, if I have a battery light on the dash, it'll fail smog. [/QUOTE]
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External voltage regulator
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