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What would cause an ignition module to keep frying? I have done the TFI ignition upgrade, with new coil,distributor cap, and wires. This is on a CJ with a freshly rebuilt 360 and a new painless wiring harness. I drove it to work for like 3 weeks and it was fine, then it starts frying modules. I check it today and find out the alternator is not charging like it should and is shot. Would this cause it to fry modules? I have gone through atleast 4 or 5. any ideas?
 

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Being in the 12volt industry I can tell you that improper voltage does wreak havoc on electrical componets. (Not sure in this case though.) Check all grounds and connectors for tightness. Try to check for pinched, frayed, chafed or melted (engine contact) wires. And above all replace that alt. No alt, you're on the batt alone. As voltage drops things get screwy.
 
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