Hi, welcome. When you say tank safety strap, what tank are you referring to? While I do not have the TT as you I have owned a couple of Jayco's and have looked at many on dealer lots, and while I do not recall seeing safety straps it is possible they are something new.
Joe, Joyce , 4 Kids and 3 Dogs.
2004 V-10 Excursion with Hellwig sway bar, Roadmaster Active Suspension, Bilstein shocks and steering stabilizer, Super Duty Tow Mirrors,
3.73 Gears, Reese dual cam, Prodigy brake controller.
2010 Jayco Jay Flight G-2 32 BHDS