Purchased a set of LED lights. the flasher was working fine, very bright as an emergency light. When I connected the same lightheads to any other flasher they are very dim. Contacted the seller and was advised the original flasher converts 12v to 24v to flash the lightheads. I have several LED flashers,(sho-me) but they do not flash the really bright lightheads, although the sho-me flashes every other light I have. what can i do?