When on the launchpad, lights on my craft function just fine. It's only after I detach a few stages, or are on the final stage and have them still attached (night time landings, etc), they will flick on for a split second and then cut, refusing to turn on again. I have plenty of EC, and nothing has been damaged. What gives? In the screenshot below I activated them, they powered for a split second and then just completely failed
Am I doing something wrong here?
(mods, not sure where to post either so feel free to move to better area)