I'm wanting to add three hot-in-run circuits to the factory fuse box in my Camaro. It has three vertical slots that would take a single bus bar or three individual connectors if I could find the connectors that would fit the box. Does anyone know where I can order them from? I have some old boxed I could cannibalize, but I'd rather have new parts for this install instead of a bunch of butt splices under my dash. Thanks.