thor never answered me (no surprise there) however i did find it. made by IRC inc. RV headquarters are are in Elkhart, IN (sounds inexpensively conspictious AKA short drive down to get parts? AKA no shipping?)
it's called a down light though thor calls it a step light on there schematics.
theres 2 versions. one black and one chrome.
site has amazon and CW links.
LED Down Light - ITC RV
i ordered 2 on 9/1/18 though amazon and it says it's be 10/2 when i get them. so we shall see.