Hello. The vin info and weight tag should be on the off door side or street side of the coach on the exterior. Near the front. About where the front jack leg is. The vin # is also stamped on the frame near the pin box again on the off door side or street side of your coach. Previous owner might have removed the sticker on the outside but the vin is stamped in pretty well.
Congratulations on your new to you Redwood. Welcome to the forum also.