i wanna convert one of my old single light performance viewpoint lights to a tail light, the road im gonna be ridin back and forth kinda sucks. i know how to make a flasher with a 555 timer chip but i want something that is variable like whats on emergency vehicles. i pulled the case off one of our strobe drivers at work (im a power lineman) but since its for strobes there is a bunch more crap in there. the ones we have at work change speed and intensity i want to just vary the flash rate to catch attention a bit better.