There is a great company called Wiring Specialties... they make connectors of many shapes and sizes as well as full harnesses. They are super nice and have great customer service. I suggest giving them a call. They may have that specific connector. Ebay sometimes has used parts with pigtail harnesses and such, so a careful browse may help. There's always the work arounds I suggested as well as your silicon idea. Please let us know if you find one in either of those places. Good luck!