The Tow Ready 4 Flat Display is a must-have for any automotive enthusiast. Based on my observations, the display provides a clear and concise view of the trailer wiring connections making it easy to troubleshoot any problems. the compact design also ensures that it won't take up too much space in your garage or trunk. The only downside is that it requires manual installation, but that`s a small inconvenience for the benefits it provides... Overall, I highly recommend this product for anyone who wants to stay informed and organized when it comes to their trailer wiring..