| 摘要 |
The invention guides the driver of a tow vehicle when backing up to hook up a trailer. The invention uses a pole-mounted indicator light that is fastened to the hitch area of the trailer and powered from an internal battery. The pole-mounted light is elevated approximately 3 feet above the hitch, such that it is visible over the tailgate of a pick up truck or from the rear window of an suv or other vehicles. An adjustable arm is attached to the indicator light pole that folds down at a 90 degree angle and projects beyond the hitch area. When the tow vehicle backs up, it contacts a pressure activated limit switch when the hitch ball is directly underneath the trailer hitch. When activated the switch illuminates the indicator light, then the driver can use the indicator light to properly back & center vehicle over the hitch.
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