A trailer may extend the back of your vehicle, but it also makes it difficult to see and be seen, especially when reversing with the vehicle or trailer. That's why it's useful to have a backup alarm system installed on the trailer. These alarms can warn others of your intentions when backing up.
Many backup alarms simply emit beeping or chirping sounds when the tow vehicle and its trailer are in reverse. Others, however, use ultrasound to detect and warn the driver of obstacles in the trailer's path. Backup alarms can be wired onto the trailer and to the tow vehicle through the harness or may be wired independently of the trailer. Many of these alarms are relatively inexpensive (under $50), can be found in auto parts stores and are useful safety devices.
Now that others know you're backing up, it might be helpful to see where you're going. This next towing accessory will help you to do that.