What's this connector pictured called?
If you are trying to use the ready made assembly that you had pictured - 


...with the automotive accessory plug on one end and the unidentified molded job on the other end it may turn out to be more productive for you to simply cut off the end of the cords and attach a more readily available type of connector. One type of plug and jack series to consider would be these:



There are latchable cable ends, panel mount and PC board mount styles to select.

http://www.mouser.com/ProductDetail/Kycon/KPJX-PM-3S-S/?qs=sGAEpiMZZMu2f9RNbWupYsheFHL1OiH6%252bfIsWV6Yx1o%3d