08-21-2011, 05:54 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,005
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Not Ranked
If you did manage to fry two MSD boxes that fast then I'm betting Dwight's right and your alternator is blasting it. You can burn up an MSD box with a jump start if you're not careful (and even if you are). That's why the MSD tech support people recommend that you install their big-ass capacitor right before the box to help shield it from voltage variances.
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