engine dying due to electric fan

Mentioned vintage air.
As in air conditioning?
Also,improve your engine to body ground. There may be insufficient grounds.
no, that was the supplier of the wiring. going through paper work to get better info, believe the fan is a LoBoy by flexalite. I'm hoping my engine/body ground is sufficient, it's 2/0 welding cable. thanks, all input helps, and the easiest fixes are usually overlooked. as Carl said