The 8526 WS might be a bit too heavy for your Tundra.
Make sure you don't overload the pin.
No matter how hard we try, we seem to carry about 1500 pounds of "MUST HAVE" every time we go camping. We have even kept a log as to what we actually used. Does not help.
You may be looking at a newer TV after you have pulled the new camper for a while.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW