Glad to see you kept up the super sleuthing Jes.
Crosses my mind that if this was the only wiring burning, how did you smell it as it is inside a sealed environment?
Or was the external wiring also getting hot?
Have seen the cooked wiring loom of a German made cars fuel pump. Needed more expertise than a generic mechanic and a new pump
COPs, so no wires. haven’t checked for arcing. Maybe I should pull COPs and checks for oil leaks but there’s not a drop of oil anywhere and no CEL so I doubt it’s that.
Im wondering if I can pull data, freeze frame, if that’s easy enough to do in a situation like this. Look at throttle, O2, etc.