Can't say for sure on your coach but ours has the HWH 325 system. The control unit should be in the front of the coach once you open the hood. Just to the right side of center. I've always dealt with RV Leveling in Indiana. Chuck is the owner and is a HWH service center. He's much easier to deal with then the factory itself. His phone number is (800)826-6267. He has plenty of inventory, plenty of information and is great to work with. Give him a try. You could also try to google HWH 325 and see what information you can gather from the net. Good Luck