If you purchase or sell a trailer, a New York trailer bill of sale can document the transfer of ownership for vehicle registration. Instructions. The new owner's social security number, taxpayer identification number (TIN), or federal employer identification number (EIN) is required.The Trailer is to be sold free and clear of any liens, encumbrances, or mortgages. Use this free form for private transactions. It comes in a printable PDF format, and you can quickly fill it out using your completer. Let's go over when to use a trailer bill of sale, what to include in the bill of sale and where to get an official template. Toll calculators, toll schedules and descriptions of E-ZPass discount programs on the New Jersey Turnpike and the Garden State Parkway.