Here is the update in case anyone else tries to wire their vehicle for a trailer.
You need to purchase the realy harness from Nissan. cost $80.00.
The harness has 3 relays on it and it connects under the passenger kick panel. It plugs right into the open receptacle. Their are 2 that look the same. It plugs into the shorter one that is tucked behind the main harness that you will see.
This is needed and the only way to have tail lights work for trailer. Hope this helps someone!