The sole purpose of this form is to authorize the above named representative to complete the transaction indicated. Edit, sign, and share authorization letter harris county online.No need to install software, just go to DocHub, and sign up instantly and for free. If the documents have confidential content, it's best you make a personalized Authorization letter. Form 14-317, Affidavit of Motor Vehicle Gift Transfer - TxDMV. Please complete this printable form online or write legibly in blue or black ink ONLY, within the lines provided. How do you write an authorization letter? Authorization letters are letters that empower someone else to take actions on your behalf. Ann Harris Bennett Tax Assessor Collector. This authorization allows the.