After adding, denting re-adding then re-editing address, the engine finally added. When I went to run it last it, headlights came on, but no sounds, then started running with no sounds. Powered off, re-powered it, it then started up and ran as expected. My suspicion is there may be a short given what happened earlier? Nonetheless, it’s at least running, even if sporadically.
Once again, appreciate all the input and suggestions.