Towing with a 2005 Titan xe

I am towing a car trailer weiging about 9000 lbs loaded.It has load leviling tow features on the hitch.I am having problems locating tow mirrors all are made for the se or le models.Mine have no power.I have found no manual mirrors.I am also tring to get trailer brakes hooked up.The place trying to hook up my lights say I need a pac that you get from nissan to make all of the trailer lights and brakes work.Nissan says they only sell their hitch as a unit.I also have a class 3 trailer hitch on my truck I am trying to get a straight answer from people here if this hitch is ok or I need a class4 hitch.

I would go and get the class 4 hitch if you are towing 9000lbs. If you buy a aftermarket hitch you still have to have 2 relays that go under the hood in the fuse box that will enable the trailer brakes and lights. The trailer brakes I know are prewired on the se and le models but I dont know about the xe since there is no power?? But if it is all you need is the pig tail from the dealer and it is located right under the steering column to the left. It will be taped up.If you buy the hitch from nissan you will get the realys also. And I am pretty shure that all of the TOW MIRRORS are power.