how do i make these incandescent bulbs blink . i bought a blinker thingy but it only works on leds not incandescent bulbs. i have two sets of these . but if i cant make them blink then out they go. N scale of coarse . they light up when i hook them to 6 volt battery. there nice an bright , but i want them to blink like real rail roads. what can i do or (easily build im not that good at electrical stuff and i dont wanna fool with putting leds in these either ) ????? i cant add pics what the heck man ?????????