I am on a number of auto forums for my vehicles and family ones. Since i am the one called on to fix them if I can. LOL
I almost alway insist on a profile signature. It makes references much easier especially as a thread grows. New reader usual just the last conversations and don't see the initial info. Plenty of examples and time should be taken to take care of that detail. Since all problems are in the details, call them symptoms, conditions, environment whatever and full vehicle details alway help with a baseline.
Info like location is key for the environment. Maybe its a rust belt issue where the main buss harness is copper corroded under the foot well, kick panel or where ever its passing into or along the body? I would not normally suspect this for a short occurring but one can't overlook what is left. Worn motor mounts can or will make a motor torque a lot more in one direction under load. I could be rubbing a harness at that point for example. it happens and if not visible sliding an insulating piece of plastic or even thin wood to space it away may help isolate an area if the harness wiring cannot be easily seen.