Actually Brian, I only have one extra terminal left on the 9-pin Pollak, and the multi-pin camera connector is housed in a spare old 7-pin. (My goal is to have an array of those little black things strung throughout the bumper area). All seriousness aside, the 9-pin is actually more of a trucker's connector, as one of my catalogs mention, even though externally it looks the same as a 7-pin. Biggest advantage was that two of the pins actually accepted my 6-gauge charge line and the ground line. My extra line could control a motor oil dump valve (as in 007).