Trailer plate lights....

How did this thread end up in shop, garage and tools? Makes absolutely zero sense.

it does if you consider the trailer a tool
or park it in your garage
or, if it is big enough to be a "toy hauler" type trailer to be considered a shop on wheels

besides, he is clearly "shopping" around for the right "tool" to get the job done so his trailer wont need to be "garaged"