I just bought a Trail Lite B+ 211s with 8.1 Chevy engine. This is my fifth motorhome (others range from an old 20' Vagabond, and three Winnegagos, from 19 to 32'. This vehicle is fantastic. I am...
For a 2003 Trailite 211 I added one regular sized 12V battery and the 2 just fitted rotated at 90 degrees to the original. They overhung the original tray which was extended and the garage that did the job made an angle iron bracket to clamp onto the upper outside edge of both batteries to secure them firmly. I needed the extra power for a satellite internet link and can go at least 4 days with no heater or other large drain on the battery.