can someone help me. i need to build an alternating switch for my car. i want it to be able to run 2 strobes at differnt times. so while one is blinking the other is off and it goes between the two every 2 seconds or so. i know how i would do it from a 555 timer. but i need to somehow do it from a car batterie which would blow the hell out of the chip. can anyone help me find a shcematic for such a thing?