you need a "neon" lamp or maybe an old style flourescent. Small voltage test lamps (neon) should be only a small cost item. All lightbulbs are 60hz, or dc, operated with the proper voltage, but only the neon or an old style flourescent which causes the light to flash (you won't see the flashing) will cause the lines of the strobe to stand still. New style CFL don't use 60hz output to operate. I'm not sure about trying to use an automotive timing light because you have the need of a triggering voltage.
