5270edf7_uper_Duty_Electronic__Flashers__Symptom
[Solution] • Check and/or replace lamps • Check whether the proper lamp is installed (A heavy-duty lamp in a standard circuit will flash too rapidly.) [Symptom] 
• Signal lamp flashes too rapidly on one side of vehicle
Automotive Flashers, Thermal, Electronic, Heavy-Duty Electronic, Super Duty Electronic, Flashers
Symptom