If you're using a Distribution hitch, follow the instructions in the manual. If you don't have the manual for a used hitch, download one online.
This needs to be done on a level surface. I'm stating the obvious here, but improper setup could effect your handling on the road in a few different ways.
I travel a major interstate daily, and and see more incorrect setups on TTs than correct ones. Trailers swaying, trucks popping wheelies, ect. Don't be one of THOSE folks......
get it on level ground and set it up proper for everyones safety, not to mention the health of your TV's suspension, tires, ect.
2010 sunset trail ST26RK, 2012 Nissan Titan SV crew cab, equalizer hitch / Pine Grove, Pa