@MLE_online whoa. Maybe check the main ground leads from the batt to the chassis? I don't know if newer cars stopped doing it, but a grip of stuff uses the chassis for return and if that lead isn't secure components can end up finding weird snake circuits back (a stretch as it probably wouldn't start if this were it). Last thought would be to pull the ignition relay (or other interesting relays heh). Could be a wedged relay keeping something on like the ignition coil circuit?