Okay, yup... leaving the key in the ‘on’ position for a longer period (hadn’t done that before, just turned it right off when it wouldn’t crank) DID result in my car sounding like the engine fan was going to launch us both to mars...

with that confirmed at least... still wondering if I’m looking at something more than the RCM soldering since it did start twice this morning... is that typical with this issue?

Thanks!!!