I have a Garmin 760 LMT with the wireless backup camera. Used it on 26 ft pull trailer and longbox truck with canopy. 57 ft overall. Attached camera to ladder, power from lic plate light, and transmitter on top of trailer roof at rear. Unit sent signal good. Sometimes in heavy rain with lots of road spray it would act up a bit. Never really found it very useful due to wide angle fisheye lens. Can see 30 ft or so behind trailer not bad but beyond that everything is too small to judge position. Unit does have parallel lines showing behind trailer on each side that are adjustable to line up with your trailer, and green, yellow, red stop distance lines that can be adjusted for distance you want. It will work good for the purpose you want it for, but you will have to get used to the distortion to figure out where you want rear of trailer to stop in relation to driveway .