I have six of the MoonshineXXX lights on my boat running off of three 27DCM Sure Start batteries in 12V. My 45lb Minnkota trolling motor is also tied to the same batteries. I have an issue with randomly some of the lights start turning off. It is never the same light it is always one or two one one side or the other. Each side is fed separately off of the batteries, wired in parallel. Some times I will get an hour to an hour in a half until they go out. Sometimes it will be 30-45 minutes. If it were a voltage drop issue wouldn't all of the lights go out? or could it be faulty lights?