Welcome to the forum Meshoi! Good luck with your re-do. Not sure how successful you will be in finding any wiring diagrams or blueprints. not sure they really exist but there may be someone here that can help. Post some pics (before and after).
Welcome to the forums. Dutchmen was acquired by Thor in 1991, however they have changed management teams under the Thor umbrella a few times so I seriously doubt any sort of documentation remains for a unit that old, it sure doesn't seem to exist for the newer models. Your best bet is to develop your own as you go, it is part of the adventure.
If you have specific questions, ask away and pictures are a plus for troubleshooting issues.
__________________ There is madness to my methods
2015 Coleman CM16FBS(traded) 2016 Concord 300DS
2015 Ford Fusion Hybrid following along