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98 fatboy burns out modules

landlord6

New Member
I have a 98 fatboy that I installed a compufire manual advance ignition module, single fire with a new single fire coil. It seems to work fine when initially installed, but when trying to tweek the timing it popped out the exhaust and then ran on only one cylinder. Rear cylinder had no spark. Switched wires from module to coil and other cylinder had no spark. Installed extra module from a friend and it worked again. Shut it off after that because I did not want to fry his module. I also have a problem with the starter hanging up with a loud clunk. I assume I am getting an electrical drain someplace and it is causing both problems since if I run the starter without the plugwires attached it turns over fine. Any ideas about where to start and what to check?
 
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