Whelen UBF5150 brake light flasher

Whelen Brake Light Flasher UBF5150. Condition is Used. Bench tested and fully working.  These were removed from city fleet vehicles. You may not receive the exact unit pictured and manufacture Year may vary. Unit will have a good length of wire but may have some signs of grime or scratches. One wire that was not uses appears to be cut on most units. 
Part #01-0669584-01