Where to mount a rear view camera monitor on E450 chassis?

When you run the wire, there are several round and oval holes next to the step well in the driver and passenger sides that have rubber plugs that you can cut a slit into and run your wire. There is no need to cut any holes or run the cable into the engine compartment. It is best to do this on the passenger side. Attach the duck foot of the monitor stand to the underside of the ceiling molding with four screws. No need to remove the rear view mirror.