Just need a 3/8” hole or even a notch to keep the door from crushing the wire, may not even have to go through the steel. It may require a junction box but shouldn’t be too bad.
They’re pretty tough and one of the best things since we have to pay personal property taxes every year is they only assess them at $100 being so old. I pay less for a flat bed gooseneck trailer, 2002 F350, a 97, and 99 XJ than my wife pays for her new GMC SUV. By several hundred dollars a year