Hi, my name's Brendan and I'm new to this site, but I need some help. I'm a highschool senior in the capstone couse of our engineering department. My friend and I are designing brake lights that show the intensity with which your are braking. On our display for our system, we want to wire some blinkers for display purposes. We have two store bought brake lights that we want to power at 12V. We want to have a timer pulsing a square wave signal to the blinker lights, and a toggle switch in series with each light so we can turn the blinkers on and off independently. The problem lies in the timer. Last year's engineering course covered the basics of electronics and circuits, and our physics classes have given us a basic understanding of the principles involved in building circuits, but I'm lost. We have 555 timer chips and access to AOI chips. We also have proficient knowledge of how to convert AOI circuits to NAND-NOR circuits. I don't know what resistance our lights give, or what current our power supply outputs. I need help asap, if possible. We're coming up on the deadline or our project, and this is one hurdle I can't figure out. Thanks so much for your help!