Rear air quit blowing, started with cutting off and on intermittently. Replaced blower and resister, still not working. all plugs have power old resister and new resister until resister is plugged back into the fan (new and old). After plugging blower/fan into resister, there is no longer power in that connector going to the fan, although power remains in the other 2 connectors on the resister. Not sure what to check next.