During the end of summer, we had a new blower motor put in. The tecnnician did not plug the motor into the board and a guy that was working at our Church plugged it in and it was fine. Yesterday, it was 7 degrees in Ohio and our furnace is working, but is not blowing the heat out. I'm wondering if it is the blower unplugged, if so, where is the board located on a RUUD furnace to plug it in?
The furnace is igniting but it won't stay on as the blower isn't coming on!

If it is a newer Ruud the board is in the blower compartment attached to the blower package. The terminals are marked park, park, heat, cool, typically. Don't use low speed (red) for heat, use blue or yellow. Just so you and others reading this post will know, Ruud/Rheem has over 30 models of furnaces they have made in the last 20 years, so all this information is just speculation based on most popular model and of a modern age.