Great Dane’s 4-in-1 Back-up Alarm System increases safety for drivers and pedestrians. The system features Grote’s new integrated lamp that combines all stop/tail/turn and back-up functions into one industry-standard size lamp. The innovative 4-in-1 Back Up Alarm only works when the wheels turn backward, does not come on when the trailer moves forward, and is completely independent of the ABS system on the brakes. It is interconnected with a sealed Grote UBS wire harness. It provides high-level electrical protection for reverse voltage, over voltage, electrical transients and over-heating. The unit is assembled into a theft resistant stainless steel mounting flange and does not require additional mounting holes to be cut or additional brackets.