If you have a question for our department, please feel free to ask it here in our forum. We will review all questions asked prior to posting. Some posts will be answered privately, depending on the nature of the question.
As long as it is your vehicle you are selling, you are okay to place signs in the window. The only time there is an issue is when a person is selling the vehicle on behalf of another, or a business trying to sell their vehicles off their lot.