I think at one time or another most of us have been confused about all of these. Here are some importants tips for you to decide which way it will go:
If you have purchased within a year of having any issues with your RV, this falls under the "manufacture warranty".
You have gotten paperwork which has all your information on it for the "date of purchase" (DOP). Keep this document close or somewhere you can find it. I recommend taking a picture of it and keep it in your phone.
Most dealerships give you anywhere from 90 days to 6 months for them to fix any items you have found after your purchase. However, dealerships will refer some items to the manufacturer warranty is on items to include but not limited to your AC, or furnaces, or refridgerator. They may have some items in stock but not always.
ALWAYS have this information written down from the dealership. Too many tell you one thing and then when honoring it, they may not honor. INCLUDE if they will be a "Mobile Repair Service" for you when the time comes, if not you may be needing a mobile repair service.
Anything that happens AFTER your one year is completed falls under the secondary insurance. Remember to keep your information close by or take a picture of it and keep in your phone. It will have the phone #, your VIN #, the POD, and your deductible information.
When purchasing a secondary (after market) insurance please ask these questions and get the answers in writing:
1) Will this cover ALL appliances? Meaning: AC's, furnace, refrigerator, microwave/convection oven.
2) Will this cover my roof?
3) Will this cover roadside service calls?
4) Will this cover service call charges?
Enjoy your travel trailer! Everything can be new and exciting with many memories to come :)