Clearly print or type all information, except signatures. MV-912: Vehicle Bill of Sale (PDF). English.Use this form to show proof of a vehicle ownership transfer through a private sale. Download. An RV Bill of Sale is a legal document that serves as proof of the sale and transfer of ownership of a recreational vehicle (RV) from a seller to a buyer. One of the most important steps in selling your car is the bill of sale. Here is everything you need to know about creating a bill of sale. Seller of motor vehicle or vessel must complete, sign and give this form to the purchaser. This is typically one of the first items you'll put on the bill of sale. How to submit this form: Submit this form along with required documents and applicable tax to the county tag office in the county where the primary purchaser. To convert a van to a motor home or after installation of a camping unit on your pick-up truck you must record this "Body Change" with your Clerk of Courts.