Although the # 9106 vent is primarily designed for use on the roof of a trailer, there's no reason why it couldn't be used on the sidewall. The vent is designed for a 11-1/8" long x 5-1/2" wide rough opening, so if the opening on your trailer wall is similarly sized, the vent would work well for you. An interior trim piece, part # 2756 is also available. view full answer...
Your Toy Hauler would've been prewired for a Furrion Vision S camera system like # FCE48TASL-05. The rear camera would install at the back of the hauler above the rear door just as you describe, with the other 2 installing on each side of the toy hauler. The 5-inch color touchscreen display can display up to 4 camera inputs at a time, which is a nice feature to have. The cameras provide night vision and motion detection.
I've linked you to an installation video which you might find helpful. view full answer...
I sure can! A 14x5.5J wheel has a 5 on 4-1/2 lug pattern. You can use the Loadstar ST215/75D14 Bias Trailer Tire with 14" White Wheel - 5 on 4-1/2 - Load Range C item # AM3S550 as a spare. view full answer...
The best storage cover for your 2016 Jayco Octane 161 is the Adco Olefin HD part # AD97ZR which provides the best protection, easiest install, and has access panels in case you need to get into the RV. view full answer...