This was a replacement for one that was damaged, so obviously I like the product. However, your directions pretty much suck....and based on the comments I saw when looking for a u-tube video to help, I'm not alone in that assessment. Mounting & installation are straight forward, but programing with the buttons is confusing and using a phone isn't much better. I'm 73, so what may be what is intuitive for someone younger isn't for me. After a lot of trial and error, and a fair amount of frustration, I got it where I wanted it. It could have been easier with clearly written sequential instructions that were in print large enough to read. For the record, I have a technical background in aviation and I've seen complicated instructions for commercial airline navigation systems that were better written.