okay, so i just noticed the other day that my trailers "running" lights don't work. What i mean by that is, when i turn on my headlights, the clearance markers and tail lights don't light up, like they should. everything else works fine on the trailer, both turn lights, brake lights, 4-way flashers, everything but the dim illuminatin on the lights when the headlighs are on. now i don't drive after dark usualy with the trailer, but it still bigs me. any ideas?