TAIL RUNNING AND BRAKE LINE HARNESS SPLITTER

I am planning on installing an LED tail light and a hard case that I purchased that has lighting on it as well. I was wondering if anybody knew if somebody makes a harness splitter for the tail light. I've seen them for the turn signals and I really haven't dug too deep into the tail of the bike yet, but for all I know they might use the same connectors (althought I doubt it). Any help would be greatfully appreciated.
 
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