Yes, the Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents w/ Exhaust Only Fan # MA39FR is the correct replacement circuit board for your 8501 model. view full answer...
Yes, the Roadmaster sway bar part # RM-1209-128 that you referenced is a confirmed fit for your 2016 Mercedes Sprinter 2500 and would work well. view full answer...
Based on how you are describing it I believe we do have what you are looking for with the following replacement part for your Thule HideAway awning:
- Replacement Connection Support Arm for Thule HideAway Awnings # TH58VK view full answer...
I'll start out by saying that based off the board you've mentioned it looks like you've got a MaxxFan Plus model 4700. The lift lid not opening on your MaxxFan is usually down to a bad board, and if the unit is beeping at you when you try to operate different functions, it's usually a sign that the board is bad. With that said, I would recommend testing the input/output voltage on the fan to see if it's operating correctly. If the fan operates normally, but the lid just won't open it's... view full answer...