About a year or so back someone made up, or had an auto electrician make, a very neat Y cable using the original connectors. I wish I had seen it before I had an extra cable spliced in. It is by far the best solution.
That was me when I got the original Harness maker to make me what I called a Y Splitter to go into the connector used to link the Cobra Lamp to the harness. (contact Details on the Wiring Diagram)
I also got an extra connector from them to fit to my High Level suitcase lamp
