I took a cheap metal coat hanger (you know the cheap ones from the dry cleaning places). Cut the hook off, straighten it out, and put my own hook on the end and went blind fishing down the hole. It took me 5-10 minutes, If I recall correctly I needed a third hand to hold the hook, once I grabbed it, as I needed my fingers to manipulate the cord end through the hole.
2012 Jayco X23B
2020 Ram Laramie 3500 SRW Air ride 50Gal fuel tank.
2007 Dodge Dakota Quad Cab (retired from towing)
Equal-I-zer 4-Point Sway Control