My 2003 37PC does too. Right in the forward bulkhead facing forward on the left side. It is wired from inside the closet. I do not have the bulkhead wall, you may. I changed out the cig for dual USB ports and added an identical one on the right side of the bed.
There is also one in the aft cabin above the stbd side cushion (that houses our central vac) next to the 115v and phone connection.
Dave