I have been doing some repairs to a popup that I recently purchased (2004 Jayco Qwest) and noticed that the a/c power cord is getting pretty hot. It is a rooftop Coleman unit that seems to work fine otherwise. I don't know if it was installed by a previous owner or a dealer. The cord is plugged into a receptacle next to a sticker marked a/c use (under a bench/seat). It is hot enough that it would be uncomfortable to hold for more than a few seconds. It is only hot fairly near to the plug itself. Is this something that I should worry about? If so, any ideas about why it is getting hot?