I replaced the B/W Weldex monitor and rear B/W camera with a new color monitor and camera. I purchased my new system from RV Cams, Inc -- Backup Camera Systems and Parts
. Great people to work with and Tim was a big help in helping me select the system that would work best for me. The new monitor is a Voyager 7" quad view that connects to my old Weldex cable with an adapter. The rear color camera is a a Weldex that plugs right back in to the old cable and works perfectly with the Voyager color monitor. I also am adding side view voyager side view cameras that will trigger when the when the right or left turn signal is on. I have not installed these yet but the new color monitor works great and the color quality and HD picture are a huge improvement over the old B/W view.
For those that have side view cameras, I know they should be mounted as forward as possible above the floor line and below the mirrors. But what height seems to offer the best side views, thanks