We run a Equalizer and most of the time it sounds like one of the dogs got their tail closed in the door but that's how I know its working.
2007 Jayco Jay Feather EXP 29A
2002 GMC 1500 AWD Yukon XL Denali
Equal-i-zer 10,000 lb. Sway Control Hitch
Tekonsha Prodigy P2 Electronic Brake Control
Derale 13950 Atomic-Cool Remote Transmission Cooler