Reviewed By Gene P (Manor, TX) Reviewed for a 2018 Ford Explorer —7/18/2018 1:36 PM
Purchased the in-channel for my 2018 Explorer. They didn't work at all. Replaced them with the external version. They work fine. Then purchased the external for my 2006 F250. The reason for the 4 on ease of installation is that you have to take the outside rear-view mirrors loose to install. Not hard, just inconvenient. Everything else is a 5.