I could see ok with factory mirrors but I could not see down the sides of my 30ft Travel Trailer. I also wanted the turn signals front and back on tow mirrors. I do have an observation camera installed on the back of trailer. With the Echomaster Intellihaul System I can now incorporate the wireless cam on my 8" screen. I drive truck in the city and I want to see everything, I want to communicate my intentions on the road. I expect others to do the same. That is wishful thinking. I want to thank pgamboa for all the help he has offered to me and others on this site!