I have had my cooling fan working great in the past. Once it quit and I replaced the 5A inline fuse under the dash, worked again just fine. Recently it stopped working again only to find everything connected and inline fuse looking just fine but replaced with a new one anyway but to no avail. I have heard the relay can develop a crack on the circuit board, anyone else been down this road? These relays look to be hard to find these days, part number 85927-60020. My 40 is a ‘10/78 federal model. Any input appreciated. Thanks guys