Shads,
We have a H-33.5 and have Anchor light, Steaming light, and 2 spreader lights (for deck illumination). I combine the + for both spreaders, and all the - wires to give a total of 4 wires (+ Anchor, + Steaming, + Spreader, and - (common) ). these go to a 4 prong Cole Hersee connector - it is a round connector with 4 prongs in a square arrangement. Three prongs are brass and one is tin lead coated (I use that for - 12V). The two connector peices just plug in to one another and a good tape wrap over the joint and it works fine.