Have an aftermarket alarm system and want your factory security light on the dash of your elise or exige to blink with the aftermarket system? I have the necessary small relay to make it work. It is solid state so it will not make any noise as the light blinks. The reason a relay is necessary is that the light on the dash is activated by a negative (ground) trigger and the LED that comes with aftermarket alarm systems has a positive (12v +) trigger. By using this solid state relay you can rig one side to the LED output of your aftermarket alarm and rig the other side to complete a ground circuit to the light on the dash. All this can be done without running new wires to the dash. Very easy to hook up and I can talk you through it. ONLY $7 shipped and I have 2 of them for sale!!