I have a 1984 OMC 5.7 with a 800 series outdrive. I purchased a Pertronix ignitor II electronic ignition to install instead of the points. I wanted to know if there is a way to identify what ESA module I have. From what I read the newer ESA modue doesn't require the diode and resistor fix. The ESA was on the boat when I got it and I'm not sure if it was ever replaced. Any help would be greatly appreciated.