no output from my 5 pin ecu

Pretty good, BUT couple things:

Don't check spark with the existing coil wire especially a resistor/ supressor wire. Use a SOLID core wire with the spark tester

"No reason to remove cap." Yes there is. LOTS of these have debri/ rust/ etc caught up in the pickup / reluctor, inspect it for shaft play and reluctor strike damage. Also ALWAYS inspect the cap and rotor for carbon tracking and rotor punch through as well as "general" conditon......ESPECIALLY on a boat, LOLOL moisture in the cap!!!

I was not aware of the .2V AC "spec" on the pickup output wonder where he got that, and was not aware that a 5 pin would run with a bad seconary ballast. "I wonder" if that box is really a 4 pin box? (You can not tell by looking as many 4 pin boxes HAVE 5 physical pins)