Hi, About an idea I have not seen elsewhere in this thread which you first posted. Searching under LED truck tail lights I found some massive LED lights that take 650 milliAMPS at 7 to 12 volts. A 7~ watt tail-light? About $45 and $14 for a bracket to support it. They have it in amber, red, and WHITE. Have you or anyone else you know of tried these? These LED arrays are up tp 7" across. A visual angle that large might get more attention than a narrow spot or point. Any ideas? You and SVLOID seem to be the sharp ones on lights.