915 Generator Failed New Engine

Did you run RPMs up to 2500 for about 8 seconds to swap ECU from Gen 2 to Gen 1?  

I’ve tried a few combinations along the lines you mentioned tonight to no avail.  I have an ems backup switch which in my normal process is off before start.  I’ve done it with it on and off as well as my EFIS backup switch on and off and neither change my situation unfortunately.  I’ve check the ohms on everything I can, made sure grounds were all proper and that the A and B sides were isolated.  My wiring harnesses all look good as far as I can tell. I’m going to see if I can get someone with the BUDS software and a dongle to read my ECU’s and see if that helps.  

Yes, multiple times and for much longer than needed. I was really hoping for an easy fix but I’m not finding it.