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Ya may consider starting a new thread texastruck so folks don' have to read through 10 pages to help ya. I think ya will get more help faster that way.
Could it be that the previous owner kept the TFI coil in the DSII conversion and ran it with 12v (which most people say works) to the + of the coil and then when oneminizut bought a new coil he bought a DSII coil and is running it w/o the ballast resistor and is giving the DSII coil 12v all the time and is overheating it?
1981 Ford F-100 with 302 carbed DuraSpark II my ballast resistor is wired into my ignition coil not on the tach side. So it is sitting next to the Coil that I have to replace cause I broke the plastic front off of it. and the connector was held onto a button on the ignition coil by that plastic front. Will get an ignition coil that has real threads and nut to secure the wires and the tach wire too. I was trying to slide a gator clip onto the bare part of the green connector to get my tach running. As without a tach can't really tune up this 302 engine. I put in a vacuum gauge, and now I need a tach too in order to put the engine in proper timing. I am moving to the timing via vacuum gauge due to the age of my truck.