My Roadtrek

i'm not sure what your issue is, with your sewer hose. why would you need to heat a sewer hose? is there a reason your Roadtrek sewer hose is different than the kind that the rest of us use?

because Roadtrek Class B's are a very small section of the RV market, i think you'd get better/quicker assistance from the Roadtrek owners website:

http://www.roadtrekchapter.org/

even a call to Roadtrek's customer service dept. would probably get you the info quicker.