Hi I have had some issues with my heat not working unless on 4, so I changed the resister on it which now all settings work, however I noticed the connector has some rust on the one prong, I am wondering how I go about removing the damaged connector and replacing with a new one.As well when the heater starts up there is a loud noise coming from the blower motor...would this need to be changed as well? And if so how would I remove/replace the blower motor?