Where does this wire go? Found under oil filter.

Many did not have the plastic connector. The M&H harness for the a '65 was just the terminal no plastic.
Jim
So M&H didn't include the insulator for this terminal. That doesn't mean the factory didn't put on on it. I dont know the consequence of this terminal touching ground where there is only a warning lamp. Maybe just lamp stays on? I know shorted to ground can kill a oil gauge. There isn't a similar bare wire terminal anywhere else. There is my sign.