6/05 AT-500 Alternating Flasher For Vehicles With Ground Side Switching Headlights It is important to read, understand and follow all instructions shipped with this product. Failure to follow all safety precautions and instructions may result in serious injury or death to you or to others. NOTE With most foreign vehicles, the low beam headlights must be turned ON before the headlight flasher will operate. This needs to be done because of the design of the headlight wiring. INSTALLATION NOT