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I actually removed the circuit board from an ignition box several months ago. the circuit is pretty elementary.




I did the same, pulled apart an old orange ECU and reverse engineered it about 10-years ago. It's pretty simply circuitry. I haven't bought any newer production mopar ignition stuff. The last Electronic ignition kit I bought, the distrubitor was assembled incorrectly to where the oil pump tab was a different position than the rotor, and the rotor to cap phaseing was way off too.. This was when Mopar was selling the conversion kits for about $100 (probbably 8+ years ago?)
I have used both the orange and chrome boxes and never had one melt the potting material. The one I tore apart I thought was bad, but found later it was a wiring problem. I do use the Mallory ballast resistor, and I think they are around 0.8 ohm to 1-ohm? I have never burned one of these resistors out, but I have had two of the Mopar ballast resistors fail.
Anyhow, with these ignitions, the ignition coil is doing most of the work.