When an electric motor wears out the amps/current draw gets too high. This burns things up,relays wires,contacts etc. You can never be too big on grounds. I run an extra ground on my dual fans,this bypasses the factory connector.
Once upon a time I had a pin get so hot it pulled out of the connector,fan did not come on,coolent guage was broke........you know the rest of the story. This was on a road trip,I figured it out fixed it and learned my lesson.
Once upon a time I had a pin get so hot it pulled out of the connector,fan did not come on,coolent guage was broke........you know the rest of the story. This was on a road trip,I figured it out fixed it and learned my lesson.